Want to share my pain and hope to find some help. Just bought aeroflight RC 9 in the App Store for $120. Can't figure out how to use it for a couple of weeks. The main problem is it always forgets my Radiomaster TX12 controller (USB Joystick mode). Each time I need re-calibrate it, otherwise it may use flight mode 1 instead of mode 2. More over, aeroflight always things that throttle starts from center instead of bottom stick position. This makes half of stick scale unusable. It can be fixed during the calibration if on "center all stick" stage I put throttle to the bottom, but after each crash it forgets how it was calibrated and I need to do it again. Very painful and looks like a software bug.
I'll give this simulator another week or two then I'll refund my purchase.