Logging in problems

[Buser]

First when i load the game, a little error window pops up and says

"You can only run one instance of this game on your computer"
Then another one comes up after i press OK on that last note
"Your account has been used on different computer, you have been signed out"

And then it just says "loading" and nothing happens... Help.

[techgump]

1. Make sure you do not have other tabs/browsers running the game.
2. If still happening, try logging in with a guest account for about 5 minutes. Then logout and login with your account.

[Buser]

1. Already done that.
2. Can't even press play as guest thanks to the "loading" thingy