Just so you know, there were a lot of people that had this issue that bought or had the physical DE edition during that time including myself and none of us were able to get that gold pack #2 for free like they stated. I even chatted with the xbox live help and they couldn’t help at all and there has been no answer on the official KI twitter nor here I believe.
This is one of the threads were others had issues only days after the announcemnt was made. So I don’t buy that “limited time” thing people are saying because that would mean they only let it last for 1-3 days max.
Going one step further @rukizzel posted this on Dec 7th in the official news thread regarding skin packs, so I think there is something else going on that has not been addressed.
"rukizzelCommunity ManagerDec '16
Well, just got final word…
If you have redeemed the code for Gold/Platinum Gargos that is included with the physical/digital versions of the KI:DE, you will be able to download the Gold Skin Pack #2 for free when it releases on Tuesday, December 13th.
I know, this pack may not include everyone’s favorite fighters, but it is a small token of our appreciation for loving KI as much as you do.
Telling you all this here, now, before I figure out how I message this to the broader audience later."