OP insists he can accurately estimate aircraft altitudes from the ground. Not believable.
OP says he knows someone who flies airplanes literally at treetop altitudes. Not believable.
OP doesn't say much about where exactly he is seeing all...
Folks are willing to help, but they need a clear description of the problem. "the program will not open" isn't very informative.
Were you downloading the DJI Assistant 2 on a computer? Phone? Were you able to download the file? Were you able to...
Really? It doesn't look like it to me (and I'm thousands of miles away from where you sit).
If the screenshot above (which you uploaded, I just highlighted the v-e-r-y obvious clues) really shows the page you downloaded from, it's pretty...
I *think* (based on a screen shot) the OP is using a computer running some version of Windows, but that he downloaded the Mac version of the app. If that's the case, he should stop and start over with downloading the right bits.
Macs don't need...