The Facebook stock app for nokia n9 is broken.
It seem that, if you keep working during the years, without change password, or reset, you could contiune using it... (this also for Twitter).

But if you delete, reset, or log-out, you need to log-in and loose everything.

I know this is an old post but have anyone managed to make jabber work with facebook or Whatsapp on n9. I just want to be able to receive messages and respond