After I bought the game (limited edition) I writing the cd-key to gamesas.com for bonus . there showed me rank 5, hologram ... all receive the limited edition but they tell me: wrong serial to play multiplayer ...
Can anyone help me with this?
I am not happy because I gave enough money on this game and I can not play multiplayer

"Serial code is incorrect.A valid serial code is required to play Multipler"i dont understand why (
i bought this game for multiplayer ... -> NOT WORK <-

I can login, but when i try to enter in the multiplayer menu and connect to server , i have the invalid key error

Hey man ! you might try to contact with the EA or Crytek person . Or maybe , look on the top of this page . SEE ?
there is a " Help and Support " button on it .