Vivaldi is chrome under the covers,, just like edge is.
Set the user agent override to the latest chrome in Settings > DVR. Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36
Already tried 2022-beta-0.9.0 (not sure if the one I have is the 6000064828).
That's worse. Vivaldi is not supported. See screenshot.
jakster123
I followed your instructions on putting the latest Chrome agent in the DVR settings. That did allow the HBOMax home page to load (it didn't before I did that). But I cannot login (my provider is ATT) and I know my credentials are correct, because when I go to a plain browser and login directly to ATT, I get right in. So somehow, your browser is blocking my ATT provider login on the HBOMax login screen. Screenshots are attached, demonstrating the sequence of events.