Bluetooth Music Issue

Hi,
      It is successfully connected to that Bluetooth device, but no music were played. (using Spotify)



I tried using my fitness band with my phone, connected via Bluetooth, no problem at all.



Can anyone suggest a possible reason and solution for that?


Please help.

Thanks!



I didn't find the right solution from the Internet.



References:
forums.oneplus.net/threads/bluetooth-music-issue.620099/


Medical Device Animation