RAK553/554 No AV problem

I tested RAK553/554 modules with GoPro camera, but I couldn’t get any video on my phone. It shows only blue screen. The below figure describes how I connect wires.

Both LED states are solid red and blue when I tested on Android app. My phone was connected on the AP from the module which SSID is ‘Flylink_xxxxx’. I would like to get some tips to solve the problem. What do I miss to get the video stream?

您好,请问您购买的RAK553现在还用吗?我想购买您的RAK553可以吗?价格可以是800元。如果您看到该消息,可以联系该邮箱:[email protected]。非常感谢