Ten Year Car Pack shows installed/purchased/owned, but still not free?

Hello, I’ve been on the phone with xbox support 3 times so far over the last week, and now I’m being told to go here for an answer. I bought the Xbox One Forza edition about two weeks ago. Came with with free game/dlc content all in one. Downloaded everything and the game plays fine, but the cars are not showing under free cars. The pack has been downloaded, installed, purchased, owned. Whatever you want to call it. I’ve hard reset the xbox, re-downloaded the game and dlc, logged out of my account, removed account and re-added.

Only thing I can think of is the xbox changed my gamertag without me knowing sometime around the install. I later changed it to something else. I thought xbox support could look at my license and see that it was applied correctly, but now I’m not sure.

Can anyone help?

Sounds like something messed up
Only the profile that actually bought the carpack gets it free ingame
You can check by logging into your account on xbox.com and looking under purchase history