My setup is a LG B2 OLED, Apple TV, a Beam connected to the TV via eARC, and 2 Era 100s connected to the Beam as surrounds in the Sonos app.
The last few months Ive had this setup, its worked great. I usually use it for watching YouTube/Netflix/Spotify through my Apple TV. However, about a week ago, my issue started happening - Now when listening to YouTube or Spotify on Apple TV, the surround speakers do not play any audio. Again, they previously did before, and I changed no settings. I used to be able to go into the Sonos app in the surround audio section and adjust how much the Era100s would play vs the Beam, now regardless of whether they are set at 0 or +15, there is still no surround sound. I can airplay directly to the Sonos system with Spotify on my phone for example, but this is not ideal - I want the Eras to work as TV speakers for Youtube, which they have done before. I can even change the volume of YouTube through Apple TV that is coming out of the beam by using the touch controls on top of the Era 100s, but there is no audio through the surrounds.
Has anyone else had this issue? It seems like there might have been an update pushed or something that ruined this functionality. I can't see myself holding onto this system anymore if there isnt a fix