I am having the same problem, it is via your xbox live email. However I was told that if it was not redeemed by the 30th than it would have no affect. If this is true then I would like to get mine before the 28th. I bought it around the 12th and I have a friend who bought it on the 17th and he got it on the 20th, should I have got it on the same day if not 1 day later, since I got it earlier?