Facebook and one on one chat problem

I m having problem with WPMU chat plugin facebook login option. I have inserted correct App id and secret but can't see the facebook login option when try to login. The google + login option is working correctly but this is required that we could login using facebook id here. The one on one chat is also not working as the second WP user e.g subscriber not showing in the list while it is also not working between g+ logged in user and WP user. Also please tell me if there is any option for WP user to login using his password too rather than only giving email and name? Also Please tell me if there is any way that in chat box only user list would be displayed and not the messeges and chat'd start as we select some online user and then chat privately with him just as facebook chat. Please respond me as early as possible about the solution.