Tying to have the Bluetooth connectivity disconnected, I did reboot multiple times until eventually I could achieve this. Like always after rebooting I could connect the sound to my Bluetooth device, but right after shutting the device off and trying to reconnect no sound arrived to your Bluetooth device. https://www.bluetoothspeaker.top/direct-sales-wireless-speaker-indoor-sound-box-m3-super-rgb-wireless-speaker/