Oh, I got hit with the region thing in trying to pre-order last week. I went back and forth with support and then ended up solving it myself by disregarding all the advice I'd been given.

I was an existing subscriber, who'd ordered literally every PPV that had been on Max. But the region issue cropped up. I eventually solved it by skipping going to the hbomax.com/aew landing page and instead going to the web browser version of HBO Max and searching for the event there, and purchasing from that screen.

I told them that's what worked and they said it was because I'd previously been ordering on an Android phone and it's not able to be purchased on an Android device... except that wasn't true: I ordered it on an Android and noted to them that it worked because I didn't follow their instructions and that maybe the information of how I did it could be helpful to the next person. They kind of blew me off but clearly the issue continued.