I have a pair of era 300 speakers. When i connect to them with bluetooth no sound comes out. Tried with several different devices both apple and android. You can see through the sonos app it shows connected on bluetooth. The sound is playing on my device. The speakers just wont relay the sound. They worked fine at the beginning. Then it got harder to get them to play. I would have to connect and reconnect. Then it would work again. Then it got worse. I had to repair them. Now no mater what i do the sound will not go through. Works fine on wifi but will not work on bluetooth at all. Tried with friends phones and same thing. They connect but will not play sound.