hi can any body help me with mavic air signal issues.when turning the aircraft on and the rc on, the aircraft connects to the rc for one minute only then disconnects,i try again to pair them with no luck....the aircraft & rc will only link together if i leave them over night they link for one minute only...i have tried everything i can think of.eg compass calibration,imu calibration,watched youtube vids, dji vids, up dated aircraft firmware,updated rc firmware...bought this mavic air 22/8/2019 sent 5 emails to dji suport no reply..tried phoning dji cannot get through number dead..its not as though a am new to drones i have had them for years.bought phantom standard,spark,mavic 2 pro,all good no issues, but this mavic air is doing my box in.. any help would be appreciated thanks.