I don't have a Twitter but I wanted to post this and get some more eyeballs on this.
I live in Mexico, where HBO Max was available and I purchased a year long subscription.
Then they made this switch, and now the HBO Max only opens to a splash screen telling me to download the Max app:
https://imgur.com/a/YsbAdPK
When I download the Max app, I get a screen telling me it's not available in my region yet:
https://imgur.com/a/vhlfqAh
This whole thing has been so stupid and botched, it makes me really mad. Now I have to contact Apple support and try to cancel my subscription since I cannot access it anymore.