Quote Originally Posted by Salur View Post
Apologies if these are dumb questions, but: (assuming this is PC) where did you order the game from? You should have codes somewhere (either a receipt or e-mail, generally); did you activate those codes on steam?
It was ordered from Electronics Boutique and came with two leaflets, one for the premium club and one for the arena. According to the instructions on the leaflets the DLC is linked to the main code on back of the manual. The leaflets do have their own codes, but they aren't compatible with Steam (too many characters).