benatis

hi, my name is Benny from Australia. 2 months ago i purchased Beholder DS1 from USA, since i got everything works fine with the Joystick too. but i am not using it at that time, so i keep in my storage room untill the 6th weeks i need it back. at that time, because no battery so i recharge it. and after charging and turn on like before i use it, i found a problem with my Beholder ds1 that the JOYSTICK 5-way buttons not working so i cannot control the movement of my Camera, but the Gimbal work like normal and stabilize perfectly. i tried to reset button, and try long press the power and everything, the Joystick not working. what should i do to fix this problem, thanks