My v2 does work until I try and use custom lipo cutoff voltage,then it will arm and the lights work when I pull throttle and brake but the motor doesn't

Turn the custom voltage off to aut-lipo and everything works.
When I try and use it with the custom cutoff the fan runs slow with the batt plugged in and when you pull throttle and brake the fan speeds up with no motor movement
I have seen on here another member having this problem,is there anything to fix it or do I have to send it back to cc


