Recieved my vision with an aftermarket gimbal. I don't like it. I eventually will reinstall the stock camera an mount. My question is" I have plugged my P2 into my PC with the USB cable. I power up the Tx, then power up the P2. I open the DJI Vision asst. 3.8... The TX is not communicating with the P2 thru the software app. I can't set rates on the TX or check the batteries. So what am I not doing? I have a FC40 and it works just fine. Any help. I have read the manuals, viewed tutorial, you tubbed myself blind. Help please.