Halo Infinite insider not working

I’m trying to play the Halo Infinite co-op flight but the insider isn’t working. I have tried restarting my Xbox One X and still nothing. What I’m I doing wrong?

Does anything in here help?

https://insidersupport.halowaypoint.com/hc/en-us/articles/7623367397268-Network-Co-Op-Flight-Xbox-Installation-Instructions