I took part in the promotion last summer to preorder advanced warfare when I picked up my copy of Destiny from gamestop and received a code on the bottom of my receipt to claim the shader but when I tried to use it a few days after the game came out it said the code had already been redeemed, I completely forgot to look into it back then and just remembered after seeing all the giveaways. Is there anyway I can provide you with the code and get a replacement or see what is going on with it?