This might just get lost in the forums with no response, but I tried to use my ODST code to download the campaign the other day and it said the code had already been used even though I hadn’t used it yet. I did wait about a week and a half to try to redeem it, but that shouldn’t make a difference. I would really like a new code to get my download of ODST campaign
Bump
If you are positive that no one else has access to your account and could have redeemed the code for themselves, have a read over the MCC FAQ linked in my signature. It details out where you need to post for help 