I just confirmed that if you registered any bonus item codes before you installed and registered the retail version, you will not be able to recieve the that/those bonus item(s) in game.
i registered my armbands yesterday since SE recommended we set everything before hand, and i did not recieve the armbands in game.
i went back, deleted my character, tried to reregister the item code, it said already registered.
so i registered my onion helmet with ingame success.
with further reading on the onion helmet code slip from the box it says all codes are enterable one time and one time only.
sorry guys, i think its totally stupid but look who were dealing with.