iCloud stopped working

I've been successfully using icloud on 4 devices since it came out. Christmas morning I got an error saying user and password don't match. I never changed it nor did I ever have to. I assumed it was just a Christmas time blunder like last year with everyone hitting the servers, however I still can't use icloud services. I can't even click the forgot password like in the system preferences. I am unable to do anything with my account.

Hoping to hear of some issues or solutions.

thanks