Throttle stick center problem with beaglebone blue

good evening, I have a problem with an esc and its motor.
I have a BeagleBone Blue board with ArduRover 4.4.0.
The connected servo is working properly which controls the steering.
the esc that controls the engine instead with the stick in the center tends to start. I calibrated the RadioLink AT10II controller both from the radio itself and from the mission planner.
I also tried with the Trim on Servo Output but despite this it keeps starting and then stopping.
what should i check?

Have you followed wiki for motor calibration and mode ?
https://ardupilot.org/rover/docs/rover-motor-and-servo-configuration.html#esc-configuration