Unable to find other users, android

[Grimshire]

Chat21's activities load fine, but no other users appear when attempting to search in the search bar at the top of the contact activity.
My configuration:
`ChatManager.Configuration mChatConfiguration =
new ChatManager.Configuration.Builder("quicklore") //BuildConfig.APPLICATION_ID
.firebaseUrl(QuickloreConstants.configuredDatabaseUrl)
.storageBucket("lorebuilder-c1940.appspot.com")
.build();

    FirebaseUser currentUser = FirebaseAuth.getInstance().getCurrentUser();
    // assuming you have a login, check if the logged user (converted to IChatUser) is valid
    if (currentUser != null) {
        IChatUser iChatUser = new ChatUser();
        iChatUser.setId(currentUser.getUid());
        iChatUser.setEmail(currentUser.getEmail());
        ChatManager.start(_context, mChatConfiguration, iChatUser);`