The Bluetooth connection rely on the connected device to be in close proximity to the Maestro. Even a human body can stop the signal from reaching the connected device. To ensure the most stable connection, leave the device close to the Maestro when using Bluetooth.
When the Bluetooth loose connection it has to be manually reconnected. Some apps are programmed to start playing automatically when Bluetooth connects. This can in some cases be quite annoying so that is why the automatic reconnect option is disabled on IXION Maestro.