Hi, bought it in MAR 2020, use twice indoor less than 2 hours each time… Tried to use it the third time, now can only connect at High volume, when lower the volume, it just mute itself. The start-up or shut down does not have the “Dung” sound anymore too. Tired reset to factory default, does not help. Still the same, only at 80% volume and above than there is sound. Please advise