When i try to put in the code when i want to play multiplayer, the code i got with the game.
I have this comb xxxx-xxxx-xxxx-xxxx and it whants this xxxx-xxxx-xxxx-xxxx-xxxx, so i cant log in because of that.
I made the same mistake myself, I tried to use the "Bonus Content" code, that is xxxx-xxxx-xxxx-xxxx.
The one you should use is the one on the back side of the booklet: xxxx-xxxx-xxxx-xxxx-xxxx
Took me some gray hairs to figure that one out..

LOL i made the same mistake.