For me the autopilot breaks out after a short period of flying time. So not the pitch axis but the roll axis was the issue .(re) Calibration doesnt work. After a very short time the AP breaks again. You can set a very large deadzone, but that breaks the immersion…
But there is also a simpel hardware fix for it.
See the post from from Arejax 21 oct. 2021 on the xplane forum ;
This fixed it for me.
After secure bind the cables from the potentiometer cables, make sure the usb c port sits correctly in the backplate, before place back the top cover again 
Fixed it for me and now i can finally fly the AP for a long period.