Just came upon your post and it is remarkably similar (so far) to a post I put up the other day with the same drone. (
No Right Control)A few weeks ago (of course the night before a job) I was doing a test flight with my seldom-used
P4P2+ and noticed (at first) the same thing. Shut all off, rebooted and tried again. Worked enough to take off on Auto Take Off, but then I realized I could not roll left or right. Changed mapping to see what would happen and confirmed that problem was in the controller, not the drone: there simply was no input to bird on the right stick, no matter what its function was.
Then a few days ago someone suggested calibration, which I’d not thought of. Simply confirmed that there was no registered input on that stick. (Thus obviously it would not get the props spinning, and I could only take off with Auto Take Off feature.)
Was planning on calling DJI tomorrow; not looking forward to that. Please let me know if/what you find out.