Beats Studio3 volume control problem

I have two Bluetooth headphones. The old junky one, a SkullCandy set, works fine. When I pair it with my Yamaha stereo receiver, I can adjust the volume using the + and - buttons. But my spiffy new Beats Studio3 pair won't let me adjust the volume when I'm listening to music, or audio from a streaming service. The Beats volume controls DO work when I'm listening to music on my iPhone, but not when I listen to music from my receiver with the room's speakers muted. I've tried deleting and re-pairing them. Still no love. Suggestions?