Hi, I recently bought a mobula 6 and fly sky fs 16x transmitter and when I try to arm the mobula 6 it either flips over or gives a short burst from the motors and then becomes unresponsive. I dont know what the problem is related to and the transmitter keeps beeping at me because of low battery for the drone even though I have left the batteries charging for over 45min at a time. Please help, this is my first time with fpv drones. Thanks.