Halo World Championship 2018 Teams, Seeds, and Discussion in Halo General Discussion Posted May 1, 2018 I contacted the Xbox Support on their forum and got the in the next 24 hours. I read somewhere that it's only possible until April 29th - not sure about it though. Go to xbox.com/mixpot and sign in with your microsoft account, then create a thread saying you watched the stream but didn‘t get the pack. I got my code via xbl message about 3 days later I just remembered about this as well. I tweeted out to @@Tashi to see if he can help out. I made a post as suggested so will be waiting patiently. Gracias amigos.