Tying to obtain the Bluetooth connectivity disconnected, I did reboot multiple times right until I could do so. Like always soon after rebooting I could connect the sound to my Bluetooth device, but after shutting the device off and trying to reconnect no sound arrived on the Bluetooth device. https://www.bluetoothspeaker.top/dual-pairing-bluetooth-5-0-loud-stereo-sound-speaker-booming-bass-8h-playtime/