Noob Setup Live TV

I just setup a Plex 1.75.4035 Server on a Mac, added a HDHomeRun Connect, signed up for Plex Pass, and am now trying to get Live TV and Recording working.

“Recording Schedule” and “Program Guide” appear in the Plex Server’s left sidebar menu. Also in the Plex Web App. They do not appear in the Plex client on an Amazon Fire TV2. Am I correct in assuming this client is different from Android TV and is not yet supported?

On the Plex Server a “Record” button, but no “Watch” appear when clicking on a current program. So no Live TV, only recorded. Why not?

Fire TV is Fire OS. Android TV is devices like the Shield TV. Live TV also does not work in the web browser. Only iOS and Android TV.