video feed problem

I have a P3S. When I first link up i get a video feed, but it is not very good. After a minute it goes grey and stops working. I can see all the drone info, just no video feed. I bought a Gimbel board off eBay but after installing I could not get any connection. But the board looks different...

I need help to know how to fix the issue of my remote keep blink red/green light, and video feed back to my phone is not work. Like signal is jamming. Recorded videos are fine. But, hard to fly without video feed. Please help. Thanks.