Trying to purchase gamertag.

Thanks for letting us know, ComboKittay!

In this case, we'd recommend reaching our Chat or Phone teams specifically - they can work with you directly and securely to look into your account and help make that change directly, while keeping your private information
safe.

If you have multiple accounts trying to access the content, it would be best to purchase it on both consoles.

When you purchase content it is tied to the gamertag that purchased it as well as the console it was purchased on. The gamertag license allows only the purchasing gamertag to be able to access the content from any console as long as it is signed into Live.
The console license is what allows other gamertags to access the content, but the license can only be on one console at a time.

Buying and selling gamertags is a violation of the terms of service. You can be banned just as much as he can for trying to purchase a gamertag.

Are you trying to access the packs on the same console or on different consoles?

When you download content it is tied to the gamertag that purchased the content as well as the console it was purchased on. All profiles can access the content if they are on the same console that the content was purchased on. The gamertag that purchased
the content can access the content on any console as long as it is signed into Live.

Are you trying to play it with the original purchasing gamertag? Are you playing it on the originally purchased console? Has this console been repaired at any time?