Not sure if my problem is the same as yours - but I couldn't either until I lowered the video resolution and frame rate to 1920 X 1080 x 30 FPS. I had to reread the manual to find out the little catcha that the special modes didn't work in any of the higher res settings on my Air 2S controller.I can not draw a box around the subject on my RC Controller to enable active track. New drone. Mavic 3 Pro Any help would be welcomed