https://www.reddit.com/r/VendettaOnline/comments/9l9696/help_with_iphone_xs_max_screen_size_issues/

I poked him over here, but in case he never makes a report or anything, essentially the game is being rendered "really small" on the new iPhone.

Yeah, he opened a support ticket, thanks.
We're aware of the issue and are working on a fix.