Motor/ESC beeping non stop


I have been flying my plane with Pixhawk Cube and last flight nothing happened nor I made any changes. But for some reason, I cannot arm my plane nor the safety switch is responding, meaning the red light on the push button continues to flash.
I know the motor/esc PWM values are off, thus the beeping but I have tried radio calibrations, and RC3_min/max to lower the values but it won’t budge.

screenshot of servo out

screenshot of radio cal.

Any idea how to lower the PWM on the radio cal page?

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Try setting the max range to 2000 on the throttle output if it doesn’t work then change the min to 1000 and max to 2000