Probably some screen resolution issue...
Until someone else come to rescue you, I would try to fully uninstall DJI GO App and then, install it again.
May not change a thing, but you never know...
I have never seen anything like this before. I also have a galaxy S6 that I use and no issues. So not so sure it is the device?? From the picture is looks as though your image is reversed. Home button & P-GPS also should be on the left side of the screen, along with the icons at the top of the screen are not correct. Is your screen layout possibly set up for RTL layout in the "developer-options"? I know I turned that on one time by mistake and my screen was reversed. Everything read from right to left instead of left to right. Took me forever to figure it out.
Solved
Had the same issue with Samsung S7, just like the picture here. This occurred right after the app upgraded.
I downgraded to a previous version of the app and it all came back to normal.