"Your account is not authorized to play HI."

I got the invite on Waypoint and participated in every flight (MCC & Insider) so far, except for the last one (24.-26.09.), but receive the above-mentioned message. What can I do? I want to play today. Thanks.

Wait another 12-16 hours as that’s likely when it will be back up for drills and training.

PVP is open for 4 hours starting at 10am PST.

OK, I’ll see, thanks.

The Halo Infinite Technical Preview is now offline, but will return on the evening of September 30th [PT]. A specific time has yet to be announced. There is no need to delete or uninstall your build.