the code isnt a gamestop problem because its inside the box so why isnt the code valid?I first thought it was cause of the midnight thing but its 10am now still the code isnt working.Guess i have to wait to play even longer

Check the PSN won't accept my code topic, it should help you.

EDIT: added the link for your convenience
http://www.gamesas.com/index.php?/topic/1122153-psn-wont-accept-my-preorder-voucher/

Hi have you moved to a different country and are using the same ps3 becaause if you have i can relate because its happening to ME!!