I have a problem with the membership login-widget.
Sometimes when logging in I get redirected to a white screen with the text "blocked".
I also have a problem with users changing back to their origin level.
They register for free and they are set to visitor-level, I then move them manually to another level. After about a day the users complain that they can't log in to their group, and when looking in the admin I find that they are reset to visitor-level again.