CANT PLAY HALO INFINITE

i got invited to play halo infinite but when I try to play on steam and go on the game its saying offline at the top right corner sometimes it will go away but queuing up takes forever and i wont que at all how do I fix this I tried to uninstall the game and everything like im on the game on steam but i only see multiplayer and academy i try to go into multiplayer but again it wont load me into a game

Multiplayer is only available during specific windows

https://www.halowaypoint.com/en-us/news/multiplayer-technical-preview-overview
Weekend 2 (October 1-3)