Bluetooth stopped working

been using my sport plus with Boombot Rex for about a week but now it doesnt work.

sport still finds it when searching and boombot responds with chime at connection but goes back into pairing  mode after a couple seconds, sport says its still connected but no sound. Boombot still connects with other devices just fine.

did firmware update 

try going to settings > system settings > restore and restore it to factory settings. That will make it forget the bluetooth pairing. Once that is done try pairing it again. 

If it does not pair i would try it with some other bluetooth headset and see if it will pair with anything. If not it may need to be replaced.