I had a Chess.com account and Facebook Chess.com account before you could sign on with Facebook. They added a feature to merge the two accounts in the past but apparently there is a bug merging premium accounts.
I would open a ticket and find out the best way to proceed: http://support.chess.com/Tickets/Submit


Hello... I'm a premium member and I login to chess.com via Facebook. I want to login directly to chess.com without login in via Facebook anymore.
I never set up an email address or password at Chess.com so I can't change it. Any help??