Same here: Redeemed 3 Codes on the Rockstar promo page. They are correctly listed on the page, but nothing can be found on bungie.net and as such, no engrams are granted in the game. Seems like the whole promo thing is pretty buggy at the moment. I guess the codes should have been granted to your bungie.net account the moment they were entered and verified on the rockstar page but some server error occured. So now I am stuck with 3 redeemed codes but not content ..