Tying to get the Bluetooth connectivity disconnected, I did reboot multiple times right until I could do this. Like always right after rebooting I could connect the sound to my Bluetooth device, but immediately after shutting the device off and seeking to reconnect no sound arrived towards the Bluetooth https://www.bluetoothspeaker.top/bass-subwoofer-loudspeaker-stereo-rgb-light-transparent-bluetooth-speaker/