Often when connected to my sonos era 100 via Bluetooth and trying to play media, the media app will say it is playing but the speaker makes no sound. Sometimes turning the speaker off and on again will fix the issue. The speaker is not muted, and the phone and speaker are connected to the same wifi network. I can get the speaker to play a chime in the sonos app, so I don't believe it is a connection issue. This happens often enough that it's a real hassle.
Anyone had this problem and successfully fixed it?
