Tying to have the Bluetooth connectivity disconnected, I did reboot multiple times till I could do this. Like always soon after rebooting I could connect the sound to my Bluetooth device, but right after shutting the device off and trying to reconnect no sound came to your Bluetooth device. https://www.bluetoothspeaker.top/loudest-portable-boombox-best-bluetooth-speaker-for-indoor-waterproof-wireless-speakers/