Wait...this isn't the account with over 9000 owners, is it? Because as we said, it's more than possible one of your friends has changed the login info, and now has full control over the account. Also, if it is that account, the devs will probably know from the IPs that unlocked LFS, as to how many owners it has. Should it have more than
1 owner, I'd doubt that you'll get any help
If it actually is your own account, can you login to the LFS site? Change your GAME password there, then you should be able to login. If you still can't, it's probably dodgy typing or something...