Yes of course I binded successfully between my goggles 2 and O3..
But i solved the mystery!
I had to activate the FPV LIVE function on the RC PRO. How? Configs > Display > FPV LIVE > ON.
Its just frustrating that I have to activate this everytime I boot my RC PRO. Why cant I save this option?
Thank you for your update. It requires you to open the function after you turn on the device. Except for this function, DJI RC Pro has multiple other functions and can be compatible with multiple drones.