Like I said, it seems to not matter if you change it or not so just ignore it and fly. I have no problem with it choosing its own channel if that is what I want it to do.
For some reason mine did not like the Shield K1 I have and use for my Phantoms. I ended up getting a Samsung Tab A and loaded the 4.15 DJI Go 4 app and used a cable. Best setup for it yet I found.