I’m having the same problem. I updated to the latest software using the bragi updater and no change. Lights blink synchronized. I noticed that if while music is playing in the right ear if I take the headphone out and bring it over to the left side of my head the left one starts playing!
Hoping posting here will help others do the same test. Bragi how can we tell if this is a software or a hardware issue? Maybe the antennas got loose? :):):) I hope it’s a software synch issue and we can fix it with an update.