Ftv password\ | | HBO Max app unavailable?

I know it's renamed to "Max". However I'm keen to find a solution to a proper version of HBO Max:
I sideloaded HBO Max ( 53.05.0 ), but it's not controllable with the remote (unless I hacked a mouse into my FTV).
Then I tried to search for Max, it has been found, and during installation it replaced my sideloaded version of HBO Max, but when I'm signing in with username and password it keeps telling me "Can't sign in".
In my region it's still named "HBO Max", but app store doesn't find it. Anyone knows a version which is compatible with FireTV?