Is the Plex app supported on Android 7.1.2? (no sound!!)

android-tv
fire-tv

#1

I have 3 android tv boxes, but cannot use the Plex app because the sound doesn't work (any format)

H96 Pro+ Android box, S912 CPU with 3gb RAM, Android 7.1, Plex app 6.11.3.3147

Luckily I can use the Plex add-on for KODI, but the native android app should really work.

Also, how do I "close" or "quit" the Plex app? There no longer seems to be an option.

Not good really, when will the sound be fixed?