[PROBLEM] Multiroom Audio - Receiver Volume Control Not Working

[dmueller]

The first command yielded;

rx,On,22,0,0,LivingRoomAudio

The second command yielded no results in browser nor did it change the volume.  I checked both on the send "receiver" page.

I tried another device, with the same results.

Both devices are opted-out of master volume.

What else can I try?