diff --git a/lib/utils/action-utils.js b/lib/utils/action-utils.js
index 1d0768953..f30671384 100644
--- a/lib/utils/action-utils.js
+++ b/lib/utils/action-utils.js
@@ -1,447 +1,447 @@
 // @flow
 
 import _memoize from 'lodash/memoize.js';
 import * as React from 'react';
 import { useSelector, useDispatch } from 'react-redux';
 import { createSelector } from 'reselect';
 
 import callServerEndpoint from './call-server-endpoint.js';
 import type {
   CallServerEndpoint,
   CallServerEndpointOptions,
 } from './call-server-endpoint.js';
 import { getConfig } from './config.js';
 import { serverCallStateSelector } from '../selectors/server-calls.js';
 import {
   logInActionSources,
   type LogInActionSource,
   type LogInStartingPayload,
   type LogInResult,
 } from '../types/account-types.js';
 import type { Endpoint, SocketAPIHandler } from '../types/endpoints.js';
 import type { LoadingOptions, LoadingInfo } from '../types/loading-types.js';
 import type {
   ActionPayload,
   Dispatch,
   PromisedAction,
   BaseAction,
 } from '../types/redux-types.js';
 import type {
   ClientSessionChange,
   PreRequestUserState,
 } from '../types/session-types.js';
 import type { ConnectionStatus } from '../types/socket-types.js';
 import type { CurrentUserInfo } from '../types/user-types.js';
 
 let nextPromiseIndex = 0;
 
 export type ActionTypes<
   STARTED_ACTION_TYPE: string,
   SUCCESS_ACTION_TYPE: string,
   FAILED_ACTION_TYPE: string,
 > = {
   started: STARTED_ACTION_TYPE,
   success: SUCCESS_ACTION_TYPE,
   failed: FAILED_ACTION_TYPE,
 };
 
 function wrapActionPromise<
   STARTED_ACTION_TYPE: string,
   STARTED_PAYLOAD: ActionPayload,
   SUCCESS_ACTION_TYPE: string,
   SUCCESS_PAYLOAD: ActionPayload,
   FAILED_ACTION_TYPE: string,
 >(
   actionTypes: ActionTypes<
     STARTED_ACTION_TYPE,
     SUCCESS_ACTION_TYPE,
     FAILED_ACTION_TYPE,
   >,
   promise: Promise<SUCCESS_PAYLOAD>,
   loadingOptions: ?LoadingOptions,
   startingPayload: ?STARTED_PAYLOAD,
 ): PromisedAction {
   const loadingInfo: LoadingInfo = {
     fetchIndex: nextPromiseIndex++,
     trackMultipleRequests: !!loadingOptions?.trackMultipleRequests,
     customKeyName: loadingOptions?.customKeyName || null,
   };
   return async (dispatch: Dispatch): Promise<void> => {
     const startAction = startingPayload
       ? {
           type: (actionTypes.started: STARTED_ACTION_TYPE),
           loadingInfo,
           payload: (startingPayload: STARTED_PAYLOAD),
         }
       : {
           type: (actionTypes.started: STARTED_ACTION_TYPE),
           loadingInfo,
         };
     dispatch(startAction);
     try {
       const result = await promise;
       dispatch({
         type: (actionTypes.success: SUCCESS_ACTION_TYPE),
         payload: (result: SUCCESS_PAYLOAD),
         loadingInfo,
       });
     } catch (e) {
       console.log(e);
       dispatch({
         type: (actionTypes.failed: FAILED_ACTION_TYPE),
         error: true,
         payload: (e: Error),
         loadingInfo,
       });
     }
   };
 }
 
 export type DispatchActionPromise = <
   STARTED: BaseAction,
   SUCCESS: BaseAction,
   FAILED: BaseAction,
 >(
   actionTypes: ActionTypes<
     $PropertyType<STARTED, 'type'>,
     $PropertyType<SUCCESS, 'type'>,
     $PropertyType<FAILED, 'type'>,
   >,
   promise: Promise<$PropertyType<SUCCESS, 'payload'>>,
   loadingOptions?: LoadingOptions,
   startingPayload?: $PropertyType<STARTED, 'payload'>,
 ) => Promise<void>;
 
 function useDispatchActionPromise(): DispatchActionPromise {
   const dispatch = useDispatch();
   return React.useMemo(() => createDispatchActionPromise(dispatch), [dispatch]);
 }
 
 function createDispatchActionPromise(dispatch: Dispatch) {
   const dispatchActionPromise = function <
     STARTED: BaseAction,
     SUCCESS: BaseAction,
     FAILED: BaseAction,
   >(
     actionTypes: ActionTypes<
       $PropertyType<STARTED, 'type'>,
       $PropertyType<SUCCESS, 'type'>,
       $PropertyType<FAILED, 'type'>,
     >,
     promise: Promise<$PropertyType<SUCCESS, 'payload'>>,
     loadingOptions?: LoadingOptions,
     startingPayload?: $PropertyType<STARTED, 'payload'>,
   ): Promise<void> {
     return dispatch(
       wrapActionPromise(actionTypes, promise, loadingOptions, startingPayload),
     );
   };
   return dispatchActionPromise;
 }
 
 export type DispatchFunctions = {
   +dispatch: Dispatch,
   +dispatchActionPromise: DispatchActionPromise,
 };
 
 let currentlyWaitingForNewCookie = false;
 let serverEndpointCallsWaitingForNewCookie: ((
   callServerEndpoint: ?CallServerEndpoint,
 ) => void)[] = [];
 
 export type DispatchRecoveryAttempt = (
   actionTypes: ActionTypes<'LOG_IN_STARTED', 'LOG_IN_SUCCESS', 'LOG_IN_FAILED'>,
   promise: Promise<LogInResult>,
   startingPayload: LogInStartingPayload,
 ) => Promise<boolean>;
 
 const setNewSessionActionType = 'SET_NEW_SESSION';
 function setNewSession(
   dispatch: Dispatch,
   sessionChange: ClientSessionChange,
   preRequestUserState: ?PreRequestUserState,
   error: ?string,
   logInActionSource: ?LogInActionSource,
 ) {
   dispatch({
     type: setNewSessionActionType,
     payload: { sessionChange, preRequestUserState, error, logInActionSource },
   });
 }
 
 // This function calls resolveInvalidatedCookie, which dispatchs a log in action
 // using the native credentials. Note that we never actually specify a sessionID
 // here, on the assumption that only native clients will call this. (Native
 // clients don't specify a sessionID, indicating to the server that it should
 // use the cookieID as the sessionID.)
 async function fetchNewCookieFromNativeCredentials(
   dispatch: Dispatch,
   cookie: ?string,
   urlPrefix: string,
   logInActionSource: LogInActionSource,
   getInitialNotificationsEncryptedMessage?: () => Promise<string>,
 ): Promise<?ClientSessionChange> {
   const resolveInvalidatedCookie = getConfig().resolveInvalidatedCookie;
   if (!resolveInvalidatedCookie) {
     return null;
   }
   let newSessionChange = null;
   let callServerEndpointCallback = null;
   const boundCallServerEndpoint = async (
     endpoint: Endpoint,
     data: { [key: string]: mixed },
     options?: ?CallServerEndpointOptions,
   ) => {
     const innerBoundSetNewSession = (
       sessionChange: ClientSessionChange,
       error: ?string,
     ) => {
       newSessionChange = sessionChange;
       setNewSession(dispatch, sessionChange, null, error, logInActionSource);
     };
     try {
       const result = await callServerEndpoint(
         cookie,
         innerBoundSetNewSession,
         () => new Promise(r => r(null)),
         () => new Promise(r => r(null)),
         urlPrefix,
         null,
         'disconnected',
         null,
         endpoint,
         data,
         dispatch,
         options,
       );
       if (callServerEndpointCallback) {
         callServerEndpointCallback(!!newSessionChange);
       }
       return result;
     } catch (e) {
       if (callServerEndpointCallback) {
         callServerEndpointCallback(!!newSessionChange);
       }
       throw e;
     }
   };
   const dispatchRecoveryAttempt = (
     actionTypes: ActionTypes<
       'LOG_IN_STARTED',
       'LOG_IN_SUCCESS',
       'LOG_IN_FAILED',
     >,
     promise: Promise<LogInResult>,
     inputStartingPayload: LogInStartingPayload,
   ) => {
     const startingPayload = { ...inputStartingPayload, logInActionSource };
     dispatch(wrapActionPromise(actionTypes, promise, null, startingPayload));
     return new Promise(r => (callServerEndpointCallback = r));
   };
   await resolveInvalidatedCookie(
     boundCallServerEndpoint,
     dispatchRecoveryAttempt,
     logInActionSource,
     getInitialNotificationsEncryptedMessage,
   );
   return newSessionChange;
 }
 
 // Third param is optional and gets called with newCookie if we get a new cookie
 // Necessary to propagate cookie in cookieInvalidationRecovery below
 function bindCookieAndUtilsIntoCallServerEndpoint(
   params: BindServerCallsParams,
 ): CallServerEndpoint {
   const {
     dispatch,
     cookie,
     urlPrefix,
     sessionID,
     currentUserInfo,
     connectionStatus,
   } = params;
   const loggedIn = !!(currentUserInfo && !currentUserInfo.anonymous && true);
   const boundSetNewSession = (
     sessionChange: ClientSessionChange,
     error: ?string,
   ) =>
     setNewSession(
       dispatch,
       sessionChange,
       { currentUserInfo, cookie, sessionID },
       error,
       undefined,
     );
   // This function gets called before callServerEndpoint sends a request,
   // to make sure that we're not in the middle of trying to recover
   // an invalidated cookie
   const waitIfCookieInvalidated = () => {
     if (!getConfig().resolveInvalidatedCookie) {
       // If there is no resolveInvalidatedCookie function, just let the caller
       // callServerEndpoint instance continue
       return Promise.resolve(null);
     }
     if (!currentlyWaitingForNewCookie) {
       // Our cookie seems to be valid
       return Promise.resolve(null);
     }
     // Wait to run until we get our new cookie
     return new Promise(r => serverEndpointCallsWaitingForNewCookie.push(r));
   };
   // This function is a helper for the next function defined below
   const attemptToResolveInvalidation = async (
     sessionChange: ClientSessionChange,
   ) => {
     const newAnonymousCookie = sessionChange.cookie;
     const newSessionChange = await fetchNewCookieFromNativeCredentials(
       dispatch,
       newAnonymousCookie,
       urlPrefix,
       logInActionSources.cookieInvalidationResolutionAttempt,
     );
 
     currentlyWaitingForNewCookie = false;
     const currentWaitingCalls = serverEndpointCallsWaitingForNewCookie;
     serverEndpointCallsWaitingForNewCookie = [];
 
     const newCallServerEndpoint = newSessionChange
       ? bindCookieAndUtilsIntoCallServerEndpoint({
           ...params,
           cookie: newSessionChange.cookie,
           sessionID: newSessionChange.sessionID,
           currentUserInfo: newSessionChange.currentUserInfo,
         })
       : null;
     for (const func of currentWaitingCalls) {
       func(newCallServerEndpoint);
     }
     return newCallServerEndpoint;
   };
   // If this function is called, callServerEndpoint got a response invalidating
   // its cookie, and is wondering if it should just like... give up?
   // Or if there's a chance at redemption
   const cookieInvalidationRecovery = (sessionChange: ClientSessionChange) => {
     if (!getConfig().resolveInvalidatedCookie) {
       // If there is no resolveInvalidatedCookie function, just let the caller
       // callServerEndpoint instance continue
       return Promise.resolve(null);
     }
     if (!loggedIn) {
       // We don't want to attempt any use native credentials of a logged out
       // user to log-in after a cookieInvalidation while logged out
       return Promise.resolve(null);
     }
     if (currentlyWaitingForNewCookie) {
       return new Promise(r => serverEndpointCallsWaitingForNewCookie.push(r));
     }
     currentlyWaitingForNewCookie = true;
     return attemptToResolveInvalidation(sessionChange);
   };
 
   return (
     endpoint: Endpoint,
     data: Object,
     options?: ?CallServerEndpointOptions,
   ) =>
     callServerEndpoint(
       cookie,
       boundSetNewSession,
       waitIfCookieInvalidated,
       cookieInvalidationRecovery,
       urlPrefix,
       sessionID,
       connectionStatus,
       socketAPIHandler,
       endpoint,
       data,
       dispatch,
       options,
     );
 }
 
 export type ActionFunc<F> = (callServerEndpoint: CallServerEndpoint) => F;
 export type BindServerCall = <F>(serverCall: ActionFunc<F>) => F;
-type BindServerCallsParams = {
-  dispatch: Dispatch,
-  cookie: ?string,
-  urlPrefix: string,
-  sessionID: ?string,
-  currentUserInfo: ?CurrentUserInfo,
-  connectionStatus: ConnectionStatus,
+export type BindServerCallsParams = {
+  +dispatch: Dispatch,
+  +cookie: ?string,
+  +urlPrefix: string,
+  +sessionID: ?string,
+  +currentUserInfo: ?CurrentUserInfo,
+  +connectionStatus: ConnectionStatus,
 };
 
 // All server calls needs to include some information from the Redux state
 // (namely, the cookie). This information is used deep in the server call,
 // at the point where callServerEndpoint is called. We don't want to bother
 // propagating the cookie (and any future config info that callServerEndpoint
 // needs) through to the server calls so they can pass it to callServerEndpoint.
 // Instead, we "curry" the cookie onto callServerEndpoint within react-redux's
 // connect's mapStateToProps function, and then pass that "bound"
 // callServerEndpoint that no longer needs the cookie as a parameter on to
 // the server call.
 const baseCreateBoundServerCallsSelector = <F>(
   actionFunc: ActionFunc<F>,
 ): (BindServerCallsParams => F) =>
   createSelector(
     (state: BindServerCallsParams) => state.dispatch,
     (state: BindServerCallsParams) => state.cookie,
     (state: BindServerCallsParams) => state.urlPrefix,
     (state: BindServerCallsParams) => state.sessionID,
     (state: BindServerCallsParams) => state.currentUserInfo,
     (state: BindServerCallsParams) => state.connectionStatus,
     (
       dispatch: Dispatch,
       cookie: ?string,
       urlPrefix: string,
       sessionID: ?string,
       currentUserInfo: ?CurrentUserInfo,
       connectionStatus: ConnectionStatus,
     ) => {
       const boundCallServerEndpoint = bindCookieAndUtilsIntoCallServerEndpoint({
         dispatch,
         cookie,
         urlPrefix,
         sessionID,
         currentUserInfo,
         connectionStatus,
       });
       return actionFunc(boundCallServerEndpoint);
     },
   );
 
 type CreateBoundServerCallsSelectorType = <F>(
   ActionFunc<F>,
 ) => BindServerCallsParams => F;
 const createBoundServerCallsSelector: CreateBoundServerCallsSelectorType =
   (_memoize(baseCreateBoundServerCallsSelector): any);
 
 function useServerCall<F>(
   serverCall: ActionFunc<F>,
   paramOverride?: ?$Shape<BindServerCallsParams>,
 ): F {
   const dispatch = useDispatch();
   const serverCallState = useSelector(serverCallStateSelector);
   return React.useMemo(
     () =>
       createBoundServerCallsSelector(serverCall)({
         ...serverCallState,
         dispatch,
         ...paramOverride,
       }),
     [serverCall, dispatch, serverCallState, paramOverride],
   );
 }
 
 let socketAPIHandler: ?SocketAPIHandler = null;
 function registerActiveSocket(passedSocketAPIHandler: ?SocketAPIHandler) {
   socketAPIHandler = passedSocketAPIHandler;
 }
 
 export {
   useDispatchActionPromise,
   setNewSessionActionType,
   fetchNewCookieFromNativeCredentials,
   createBoundServerCallsSelector,
   registerActiveSocket,
   useServerCall,
 };
diff --git a/native/account/registration/connect-ethereum.react.js b/native/account/registration/connect-ethereum.react.js
index eb2571815..8c28e48af 100644
--- a/native/account/registration/connect-ethereum.react.js
+++ b/native/account/registration/connect-ethereum.react.js
@@ -1,303 +1,315 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 import { Text, View } from 'react-native';
 
 import {
   exactSearchUser,
   exactSearchUserActionTypes,
 } from 'lib/actions/user-actions.js';
 import { ENSCacheContext } from 'lib/components/ens-cache-provider.react.js';
 import { createLoadingStatusSelector } from 'lib/selectors/loading-selectors.js';
 import type { SIWEResult } from 'lib/types/siwe-types.js';
 import {
   useServerCall,
   useDispatchActionPromise,
 } from 'lib/utils/action-utils.js';
 
 import RegistrationButtonContainer from './registration-button-container.react.js';
 import RegistrationButton from './registration-button.react.js';
 import RegistrationContainer from './registration-container.react.js';
 import RegistrationContentContainer from './registration-content-container.react.js';
 import { RegistrationContext } from './registration-context.js';
 import type { RegistrationNavigationProp } from './registration-navigator.react.js';
 import {
   type CoolOrNerdMode,
   ensAvatarSelection,
 } from './registration-types.js';
 import {
   type NavigationRoute,
   ExistingEthereumAccountRouteName,
   UsernameSelectionRouteName,
   AvatarSelectionRouteName,
 } from '../../navigation/route-names.js';
 import { useSelector } from '../../redux/redux-utils.js';
 import { useStyles } from '../../themes/colors.js';
 import EthereumLogoDark from '../../vectors/ethereum-logo-dark.react.js';
 import SIWEPanel from '../siwe-panel.react.js';
 
 const exactSearchUserLoadingStatusSelector = createLoadingStatusSelector(
   exactSearchUserActionTypes,
 );
 
 export type ConnectEthereumParams = {
   +userSelections: {
     +coolOrNerdMode: CoolOrNerdMode,
     +keyserverURL: string,
   },
 };
 
 type PanelState = 'closed' | 'opening' | 'open' | 'closing';
 
 type Props = {
   +navigation: RegistrationNavigationProp<'ConnectEthereum'>,
   +route: NavigationRoute<'ConnectEthereum'>,
 };
 function ConnectEthereum(props: Props): React.Node {
   const { params } = props.route;
   const { userSelections } = props.route.params;
 
   const registrationContext = React.useContext(RegistrationContext);
   invariant(registrationContext, 'registrationContext should be set');
   const { setCachedSelections } = registrationContext;
 
   const isNerdMode = userSelections.coolOrNerdMode === 'nerd';
   const styles = useStyles(unboundStyles);
 
   let body;
   if (!isNerdMode) {
     body = (
       <Text style={styles.body}>
         Connecting your Ethereum wallet allows you to use your ENS name and
         avatar in the app. You&rsquo;ll also be able to log in with your wallet
         instead of a password.
       </Text>
     );
   } else {
     body = (
       <>
         <Text style={styles.body}>
           Connecting your Ethereum wallet has three benefits:
         </Text>
         <View style={styles.list}>
           <View style={styles.listItem}>
             <Text style={styles.listItemNumber}>{'1. '}</Text>
             <Text style={styles.listItemContent}>
               Your peers will be able to cryptographically verify that your Comm
               account is associated with your Ethereum wallet.
             </Text>
           </View>
           <View style={styles.listItem}>
             <Text style={styles.listItemNumber}>{'2. '}</Text>
             <Text style={styles.listItemContent}>
               You&rsquo;ll be able to use your ENS name and avatar in the app.
             </Text>
           </View>
           <View style={styles.listItem}>
             <Text style={styles.listItemNumber}>{'3. '}</Text>
             <Text style={styles.listItemContent}>
               You can choose to skip setting a password, and to log in with your
               Ethereum wallet instead.
             </Text>
           </View>
         </View>
       </>
     );
   }
 
   const [panelState, setPanelState] = React.useState<PanelState>('closed');
   const openPanel = React.useCallback(() => {
     setPanelState('opening');
   }, []);
   const onPanelClosed = React.useCallback(() => {
     setPanelState('closed');
   }, []);
   const onPanelClosing = React.useCallback(() => {
     setPanelState('closing');
   }, []);
 
   const siwePanelSetLoading = React.useCallback(
     (loading: boolean) => {
       if (panelState === 'closing' || panelState === 'closed') {
         return;
       }
       setPanelState(loading ? 'opening' : 'open');
     },
     [panelState],
   );
 
   const { navigate } = props.navigation;
   const onSkip = React.useCallback(() => {
     navigate<'UsernameSelection'>({
       name: UsernameSelectionRouteName,
       params,
     });
   }, [navigate, params]);
 
-  const exactSearchUserCall = useServerCall(exactSearchUser);
+  const { keyserverURL } = userSelections;
+  const serverCallParamOverride = React.useMemo(
+    () => ({
+      urlPrefix: keyserverURL,
+    }),
+    [keyserverURL],
+  );
+
+  const exactSearchUserCall = useServerCall(
+    exactSearchUser,
+    serverCallParamOverride,
+  );
   const dispatchActionPromise = useDispatchActionPromise();
 
   const cacheContext = React.useContext(ENSCacheContext);
   const { ensCache } = cacheContext;
 
   const onSuccessfulWalletSignature = React.useCallback(
     async (result: SIWEResult) => {
       const searchPromise = exactSearchUserCall(result.address);
       dispatchActionPromise(exactSearchUserActionTypes, searchPromise);
 
       // We want to figure out if the user has an ENS avatar now
       // so that we can default to the ENS avatar in AvatarSelection
       const avatarURIPromise = (async () => {
         if (!ensCache) {
           return null;
         }
         return await ensCache.getAvatarURIForAddress(result.address);
       })();
 
       const { userInfo } = await searchPromise;
 
       if (userInfo) {
         navigate<'ExistingEthereumAccount'>({
           name: ExistingEthereumAccountRouteName,
           params: result,
         });
         return;
       }
 
       const avatarURI = await avatarURIPromise;
 
       const ethereumAccount = {
         accountType: 'ethereum',
         ...result,
         avatarURI,
       };
 
       setCachedSelections(oldUserSelections => {
         const base = {
           ...oldUserSelections,
           ethereumAccount,
         };
         if (base.avatarData || !avatarURI) {
           return base;
         }
         return {
           ...base,
           avatarData: ensAvatarSelection,
         };
       });
 
       const newUserSelections = {
         ...userSelections,
         accountSelection: ethereumAccount,
       };
       navigate<'AvatarSelection'>({
         name: AvatarSelectionRouteName,
         params: { userSelections: newUserSelections },
       });
     },
     [
       userSelections,
       exactSearchUserCall,
       dispatchActionPromise,
       setCachedSelections,
       navigate,
       ensCache,
     ],
   );
 
   let siwePanel;
   if (panelState !== 'closed') {
     siwePanel = (
       <SIWEPanel
         onClosing={onPanelClosing}
         onClosed={onPanelClosed}
         closing={panelState === 'closing'}
         onSuccessfulWalletSignature={onSuccessfulWalletSignature}
         setLoading={siwePanelSetLoading}
+        keyserverCallParamOverride={serverCallParamOverride}
       />
     );
   }
 
   const exactSearchUserCallLoading = useSelector(
     state => exactSearchUserLoadingStatusSelector(state) === 'loading',
   );
   const connectButtonVariant =
     exactSearchUserCallLoading || panelState === 'opening'
       ? 'loading'
       : 'enabled';
 
   return (
     <>
       <RegistrationContainer>
         <RegistrationContentContainer style={styles.scrollViewContentContainer}>
           <Text style={styles.header}>
             Do you want to connect an Ethereum wallet?
           </Text>
           {body}
           <View style={styles.ethereumLogoContainer}>
             <EthereumLogoDark />
           </View>
         </RegistrationContentContainer>
         <RegistrationButtonContainer>
           <RegistrationButton
             onPress={openPanel}
             label="Connect Ethereum wallet"
             variant={connectButtonVariant}
           />
           <RegistrationButton
             onPress={onSkip}
             label="Do not connect"
             variant="outline"
           />
         </RegistrationButtonContainer>
       </RegistrationContainer>
       {siwePanel}
     </>
   );
 }
 
 const unboundStyles = {
   scrollViewContentContainer: {
     flexGrow: 1,
   },
   header: {
     fontSize: 24,
     color: 'panelForegroundLabel',
     paddingBottom: 16,
   },
   body: {
     fontFamily: 'Arial',
     fontSize: 15,
     lineHeight: 20,
     color: 'panelForegroundSecondaryLabel',
     paddingBottom: 16,
   },
   ethereumLogoContainer: {
     flexGrow: 1,
     alignItems: 'center',
     justifyContent: 'center',
   },
   list: {
     paddingBottom: 16,
   },
   listItem: {
     flexDirection: 'row',
   },
   listItemNumber: {
     fontFamily: 'Arial',
     fontWeight: 'bold',
     fontSize: 15,
     lineHeight: 20,
     color: 'panelForegroundSecondaryLabel',
   },
   listItemContent: {
     fontFamily: 'Arial',
     flexShrink: 1,
     fontSize: 15,
     lineHeight: 20,
     color: 'panelForegroundSecondaryLabel',
   },
 };
 
 export default ConnectEthereum;
diff --git a/native/account/registration/username-selection.react.js b/native/account/registration/username-selection.react.js
index 6560e5a1b..2856e6ea2 100644
--- a/native/account/registration/username-selection.react.js
+++ b/native/account/registration/username-selection.react.js
@@ -1,215 +1,226 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 import { View, Text } from 'react-native';
 
 import {
   exactSearchUser,
   exactSearchUserActionTypes,
 } from 'lib/actions/user-actions.js';
 import { createLoadingStatusSelector } from 'lib/selectors/loading-selectors.js';
 import { validUsernameRegex } from 'lib/shared/account-utils.js';
 import {
   useServerCall,
   useDispatchActionPromise,
 } from 'lib/utils/action-utils.js';
 
 import RegistrationButtonContainer from './registration-button-container.react.js';
 import RegistrationButton from './registration-button.react.js';
 import RegistrationContainer from './registration-container.react.js';
 import RegistrationContentContainer from './registration-content-container.react.js';
 import { RegistrationContext } from './registration-context.js';
 import type { RegistrationNavigationProp } from './registration-navigator.react.js';
 import RegistrationTextInput from './registration-text-input.react.js';
 import type { CoolOrNerdMode } from './registration-types.js';
 import {
   type NavigationRoute,
   PasswordSelectionRouteName,
 } from '../../navigation/route-names.js';
 import { useSelector } from '../../redux/redux-utils.js';
 import { useStyles } from '../../themes/colors.js';
 
 const exactSearchUserLoadingStatusSelector = createLoadingStatusSelector(
   exactSearchUserActionTypes,
 );
 
 export type UsernameSelectionParams = {
   +userSelections: {
     +coolOrNerdMode: CoolOrNerdMode,
     +keyserverURL: string,
   },
 };
 
 type UsernameError = 'username_invalid' | 'username_taken';
 
 type Props = {
   +navigation: RegistrationNavigationProp<'UsernameSelection'>,
   +route: NavigationRoute<'UsernameSelection'>,
 };
 function UsernameSelection(props: Props): React.Node {
   const registrationContext = React.useContext(RegistrationContext);
   invariant(registrationContext, 'registrationContext should be set');
   const { cachedSelections, setCachedSelections } = registrationContext;
 
   const [username, setUsername] = React.useState(
     cachedSelections.username ?? '',
   );
   const validUsername = username.search(validUsernameRegex) > -1;
 
   const [usernameError, setUsernameError] = React.useState<?UsernameError>();
   const checkUsernameValidity = React.useCallback(() => {
     if (!validUsername) {
       setUsernameError('username_invalid');
       return false;
     }
     setUsernameError(null);
     return true;
   }, [validUsername]);
 
-  const exactSearchUserCall = useServerCall(exactSearchUser);
+  const { userSelections } = props.route.params;
+  const { keyserverURL } = userSelections;
+  const serverCallParamOverride = React.useMemo(
+    () => ({
+      urlPrefix: keyserverURL,
+    }),
+    [keyserverURL],
+  );
+
+  const exactSearchUserCall = useServerCall(
+    exactSearchUser,
+    serverCallParamOverride,
+  );
   const dispatchActionPromise = useDispatchActionPromise();
   const { navigate } = props.navigation;
-  const { userSelections } = props.route.params;
   const onProceed = React.useCallback(async () => {
     if (!checkUsernameValidity()) {
       return;
     }
 
     const searchPromise = exactSearchUserCall(username);
     dispatchActionPromise(exactSearchUserActionTypes, searchPromise);
     const { userInfo } = await searchPromise;
 
     if (userInfo) {
       setUsernameError('username_taken');
       return;
     }
 
     setUsernameError(undefined);
     setCachedSelections(oldUserSelections => ({
       ...oldUserSelections,
       username,
     }));
     navigate<'PasswordSelection'>({
       name: PasswordSelectionRouteName,
       params: {
         userSelections: {
           ...userSelections,
           username,
         },
       },
     });
   }, [
     checkUsernameValidity,
     username,
     exactSearchUserCall,
     dispatchActionPromise,
     setCachedSelections,
     navigate,
     userSelections,
   ]);
 
   const exactSearchUserCallLoading = useSelector(
     state => exactSearchUserLoadingStatusSelector(state) === 'loading',
   );
   let buttonVariant = 'disabled';
   if (exactSearchUserCallLoading) {
     buttonVariant = 'loading';
   } else if (validUsername) {
     buttonVariant = 'enabled';
   }
 
   const styles = useStyles(unboundStyles);
   let errorText;
   if (usernameError === 'username_invalid') {
     errorText = (
       <>
         <Text style={styles.errorText}>Usernames must:</Text>
         <View style={styles.listItem}>
           <Text style={[styles.errorText, styles.listItemNumber]}>{'1. '}</Text>
           <Text style={[styles.errorText, styles.listItemContent]}>
             Be at least one character long.
           </Text>
         </View>
         <View style={styles.listItem}>
           <Text style={[styles.errorText, styles.listItemNumber]}>{'2. '}</Text>
           <Text style={[styles.errorText, styles.listItemContent]}>
             Start with either a letter or a number.
           </Text>
         </View>
         <View style={styles.listItem}>
           <Text style={[styles.errorText, styles.listItemNumber]}>{'3. '}</Text>
           <Text style={[styles.errorText, styles.listItemContent]}>
             Contain only letters, numbers, or the characters “-” and “_”.
           </Text>
         </View>
       </>
     );
   } else if (usernameError === 'username_taken') {
     errorText = (
       <Text style={styles.errorText}>
         Username taken. Please try another one
       </Text>
     );
   }
 
   const shouldAutoFocus = React.useRef(!cachedSelections.username);
   return (
     <RegistrationContainer>
       <RegistrationContentContainer>
         <Text style={styles.header}>Pick a username</Text>
         <RegistrationTextInput
           value={username}
           onChangeText={setUsername}
           placeholder="Username"
           autoFocus={shouldAutoFocus.current}
           autoCorrect={false}
           autoCapitalize="none"
           keyboardType="ascii-capable"
           textContentType="username"
           autoComplete="username-new"
           returnKeyType="go"
           onSubmitEditing={onProceed}
           editable={!exactSearchUserCallLoading}
           onBlur={checkUsernameValidity}
         />
         <View style={styles.error}>{errorText}</View>
       </RegistrationContentContainer>
       <RegistrationButtonContainer>
         <RegistrationButton
           onPress={onProceed}
           label="Next"
           variant={buttonVariant}
         />
       </RegistrationButtonContainer>
     </RegistrationContainer>
   );
 }
 
 const unboundStyles = {
   header: {
     fontSize: 24,
     color: 'panelForegroundLabel',
     paddingBottom: 16,
   },
   error: {
     marginTop: 16,
   },
   errorText: {
     fontFamily: 'Arial',
     fontSize: 15,
     lineHeight: 20,
     color: 'redText',
   },
   listItem: {
     flexDirection: 'row',
   },
   listItemNumber: {
     fontWeight: 'bold',
   },
   listItemContent: {
     flexShrink: 1,
   },
 };
 
 export default UsernameSelection;
diff --git a/native/account/siwe-panel.react.js b/native/account/siwe-panel.react.js
index a91452962..d57783b9f 100644
--- a/native/account/siwe-panel.react.js
+++ b/native/account/siwe-panel.react.js
@@ -1,206 +1,211 @@
 // @flow
 
 import BottomSheet from '@gorhom/bottom-sheet';
 import * as React from 'react';
 import { Alert } from 'react-native';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import WebView from 'react-native-webview';
 
 import {
   getSIWENonce,
   getSIWENonceActionTypes,
   siweAuthActionTypes,
 } from 'lib/actions/siwe-actions.js';
 import { createLoadingStatusSelector } from 'lib/selectors/loading-selectors.js';
 import type { SIWEWebViewMessage, SIWEResult } from 'lib/types/siwe-types.js';
 import {
   useServerCall,
   useDispatchActionPromise,
+  type BindServerCallsParams,
 } from 'lib/utils/action-utils.js';
 
 import { commCoreModule } from '../native-modules.js';
 import { useSelector } from '../redux/redux-utils.js';
 import { defaultLandingURLPrefix } from '../utils/url-utils.js';
 
 const commSIWE = `${defaultLandingURLPrefix}/siwe`;
 
 const getSIWENonceLoadingStatusSelector = createLoadingStatusSelector(
   getSIWENonceActionTypes,
 );
 const siweAuthLoadingStatusSelector =
   createLoadingStatusSelector(siweAuthActionTypes);
 
 type Props = {
   +onClosed: () => mixed,
   +onClosing: () => mixed,
   +onSuccessfulWalletSignature: SIWEResult => mixed,
   +closing: boolean,
   +setLoading: boolean => mixed,
+  +keyserverCallParamOverride?: $Shape<BindServerCallsParams>,
 };
 function SIWEPanel(props: Props): React.Node {
   const dispatchActionPromise = useDispatchActionPromise();
-  const getSIWENonceCall = useServerCall(getSIWENonce);
+  const getSIWENonceCall = useServerCall(
+    getSIWENonce,
+    props.keyserverCallParamOverride,
+  );
 
   const getSIWENonceCallFailed = useSelector(
     state => getSIWENonceLoadingStatusSelector(state) === 'error',
   );
 
   const { onClosing } = props;
   React.useEffect(() => {
     if (getSIWENonceCallFailed) {
       Alert.alert(
         'Unknown error',
         'Uhh... try again?',
         [{ text: 'OK', onPress: onClosing }],
         { cancelable: false },
       );
     }
   }, [getSIWENonceCallFailed, onClosing]);
 
   const siweAuthCallLoading = useSelector(
     state => siweAuthLoadingStatusSelector(state) === 'loading',
   );
 
   const [nonce, setNonce] = React.useState<?string>(null);
   const [primaryIdentityPublicKey, setPrimaryIdentityPublicKey] =
     React.useState<?string>(null);
 
   React.useEffect(() => {
     (async () => {
       dispatchActionPromise(
         getSIWENonceActionTypes,
         (async () => {
           const response = await getSIWENonceCall();
           setNonce(response);
         })(),
       );
       await commCoreModule.initializeCryptoAccount();
       const {
         primaryIdentityPublicKeys: { ed25519 },
       } = await commCoreModule.getUserPublicKey();
       setPrimaryIdentityPublicKey(ed25519);
     })();
   }, [dispatchActionPromise, getSIWENonceCall]);
 
   const [isLoading, setLoading] = React.useState(true);
   const [isWalletConnectModalOpen, setWalletConnectModalOpen] =
     React.useState(false);
   const insets = useSafeAreaInsets();
   const bottomInset = insets.bottom;
   const snapPoints = React.useMemo(() => {
     if (isLoading) {
       return [1];
     } else if (isWalletConnectModalOpen) {
       return [bottomInset + 600];
     } else {
       return [bottomInset + 435, bottomInset + 600];
     }
   }, [isLoading, isWalletConnectModalOpen, bottomInset]);
 
   const bottomSheetRef = React.useRef();
   const snapToIndex = bottomSheetRef.current?.snapToIndex;
   React.useEffect(() => {
     // When the snapPoints change, always reset to the first one
     // Without this, when we close the WalletConnect modal we don't resize
     snapToIndex?.(0);
   }, [snapToIndex, snapPoints]);
 
   const closeBottomSheet = bottomSheetRef.current?.close;
   const { closing, onSuccessfulWalletSignature } = props;
   const handleMessage = React.useCallback(
     async event => {
       const data: SIWEWebViewMessage = JSON.parse(event.nativeEvent.data);
       if (data.type === 'siwe_success') {
         const { address, message, signature } = data;
         if (address && signature) {
           closeBottomSheet?.();
           await onSuccessfulWalletSignature({ address, message, signature });
         }
       } else if (data.type === 'siwe_closed') {
         onClosing();
         closeBottomSheet?.();
       } else if (data.type === 'walletconnect_modal_update') {
         setWalletConnectModalOpen(data.state === 'open');
       }
     },
     [onSuccessfulWalletSignature, onClosing, closeBottomSheet],
   );
   const prevClosingRef = React.useRef();
   React.useEffect(() => {
     if (closing && !prevClosingRef.current) {
       closeBottomSheet?.();
     }
     prevClosingRef.current = closing;
   }, [closing, closeBottomSheet]);
 
   const source = React.useMemo(
     () => ({
       uri: commSIWE,
       headers: {
         'siwe-nonce': nonce,
         'siwe-primary-identity-public-key': primaryIdentityPublicKey,
       },
     }),
     [nonce, primaryIdentityPublicKey],
   );
 
   const onWebViewLoaded = React.useCallback(() => {
     setLoading(false);
   }, []);
 
   const backgroundStyle = React.useMemo(
     () => ({
       backgroundColor: '#242529',
     }),
     [],
   );
 
   const bottomSheetHandleIndicatorStyle = React.useMemo(
     () => ({
       backgroundColor: 'white',
     }),
     [],
   );
 
   const { onClosed } = props;
   const onBottomSheetChange = React.useCallback(
     (index: number) => {
       if (index === -1) {
         onClosed();
       }
     },
     [onClosed],
   );
 
   let bottomSheet;
   if (nonce && primaryIdentityPublicKey) {
     bottomSheet = (
       <BottomSheet
         snapPoints={snapPoints}
         backgroundStyle={backgroundStyle}
         handleIndicatorStyle={bottomSheetHandleIndicatorStyle}
         enablePanDownToClose={true}
         onChange={onBottomSheetChange}
         ref={bottomSheetRef}
       >
         <WebView
           source={source}
           onMessage={handleMessage}
           onLoad={onWebViewLoaded}
           style={backgroundStyle}
           incognito={true}
         />
       </BottomSheet>
     );
   }
 
   const setLoadingProp = props.setLoading;
   const loading = !getSIWENonceCallFailed && (isLoading || siweAuthCallLoading);
   React.useEffect(() => {
     setLoadingProp(loading);
   }, [setLoadingProp, loading]);
 
   return bottomSheet;
 }
 
 export default SIWEPanel;