I didn’t see a support forum so I’ll put this here.
Basically, I have “applied” multiple matches of Halo 4 Mtn Dew Double XP to my gamertag and it has not been working since the day or so after launch.
Not only that, but I have entered those codes on waypoint that say they give me extra XP, including over 10k for the “Day 1” and I’m pretty sure I didn’t get that either.
Any ideas?