Lack of an HBO Max app is annoying for sure. I just play it on my iphone and then AirPlay to the TV which isn't too bad. Now if Windows Laptops could cast OTA better that would be the best... haven't been able to get the windows airplay equivalent to work at all

That’s annoying.. I didn’t realize because I have some form of HBO as an Amazon prime video channel. So at least there’s that. Also using echo studios as sound output requires a Fire TV....