I have a Ray together with a sub connected to my Sonos system and it is also connected to my TV. On one of my devices the small circle does not show up so controlling volume is not possible, however on another device it works. Have tried to restart the app in the phone but did not help
Answered
cannot control ray volume in app only on on device
Best answer by Mr. T
It’s a known issue being investigated.
https://www.reddit.com/r/sonos/comments/1r92nac/volume_sliders_gone_again/
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