Use the latest client version 3.4.6 to avoid Facebook login issues. If other issues persist, try binding your account in user center so you're not relying on third party login.

i still can't log in. 5th day now.

1. How can I bind my account if I cannot log in?

2. I remember I bound it already maybe 2-3 years ago. When I try to log-in via email and click forgot password, it gives me 3 options where I cannot choose any because it say's "NOT YET SET".

So now my only option is facebook log-in..still waiting for bug to be fixed.