is it normal for the mp to lose subject all the time ?

I have tried to put the mp up to like 100feet and down to as low as 20feet and it always lose me and that's with me walking as it follows me it will go from green box to yellow back and forth over and over then it losess me .

and done all the calibration , galbal too, but nothing helps .

I'm a missing something about this?

Do your clothes match the surrounding area? I have noticed if I have on all black and then walk onto a black paved driveway both the Spark and Mavic Pro have a hard the tracking me. I would make sure you have enough contrast between you and the background.

I agree with Strobing_NYC clothing and background have a big part in Active Track. Here is a YouTube link  I did when my wife was on her daily hike.

Hi there, please refer to the manual and avoid the scenarios if you are in the similar situation. See if it works.