So I have an existing system of two Sonos Eras 100’s and one Play:1. I recently made the plunge and decided to buy the Arc for my TV. Easy install: as soon as I did it, I had ZERO issues with my Arc playing audio with my TV//Apple TV. And even though all 4 speakers show up on my system in the Sonos app (iOS), I simply cannot play music to ALL Sonos devices from Spotify. I can either do 1. Play music to my two Eras 100’s + Play:1 *OR* just to the Arc. When I pair them all together in the Sonos app, NOTHING plays - complete silence. HELP!