I can't get my DJI FPV controller to calibrate properly either. Anyone managed to get it to work?
If you keep an eye on the little circles above the OK button as you go through calibration in Freerider, what kind of input are you getting? Are you able to move some of the circles smoothly up and down?
No, they jump around. Not smooth. I am guessing it won't work with the Dji controller :(
2021-03-26:
The internal input system has been completely reworked in the latest update.
You can try that to see if it works better with your controller.