I've been away from drones for awhile. Home sick and dug a P4P that I bought over the summer dirt cheap, to try to sort out. It has a GL300F controller, when I use the DJI go app from my phone the controller keeps changing the app to "Inspire" and switches from P4P. I can't get controller to link to drone either. So...I guess my question is.....Is this the app? Or is this the firmware in the controller? I use to know how to do all of this with the P3P, My memory sucks!!! I cant remember how to wipe the firmware and start over. Can someone point me in a direction? Thanks in advance!