I'm trying to enter my DLC code in the Redemption box but it keeps telling me that it's invalid. Anyone else experiencing this?

I read another thread where someone was getting this type of error with codes. He solved it by switching zeroes for O. So if there's a zero in your key, try an O instead. If you have more than one, you may have to try several combinations to get it right.

Switching the o's and 0's worked for me last night to authenticate my game, but i'm having the same issue with my dlc, one number and all lowercase numerals, none of which are o's. So I guess I'm SOL

There aren't any O or 0s in my code, the only letter that looks sort of weird is the L, it looks more like a backwards capital J

Never mind, I restarted it and it worked :D