Mcc game pass reach not working

Hey everyone quick question, I have the Mcc on Xbox game pass, I fire up the Mcc and it works fine but if I try to play reach it says I’m missing the reach pack, and sends me to a purchase page on the Xbox store. Anyone know what the issue is? I though it was free with game pass

You still have to “redeem” it via the store as its a dlc

I had to do the exact same thing