I'm having the exact same issue. It started with my old account (and my husband's as well. We haven't played in 2 - 3 years). I combed the forums, did everything that was suggested. When none of that worked, I got the bright idea to create a new account. Guess what....can't log in with that either. We've checked, and rechecked, and checked our launchers again. We've submitted tickets, so we'll see if they can straighten it out. I know last year (according to the forum posts I read) there was an issue with changing passwords. For the record, I did try to change my password because I had no idea what it was. My husband, who is having the exact same issue, did not.