Cant redeem code

So I got the Limited Edition physical copy of Halo 5 and inside was a card that came with a code that can be used for various in game unlocks and access to the Halo Reach animated series, yet everytime I put in the code it says it won’t recognize it. Ive tried everything, all caps, all lowercase, O for zero and zero for O and so on. It doesn’t say code has been redeemed already, just that the code is unrecognizable. What gives and how can I fix it or get another code? Thanks.

NM figured it out lol. My code was just misprinted or something. Was supposed to be a Q instead of O lol. So this topic can be closed I guess. Thanks

Sounds like your issue is resolved. Thank you!