Simkonk 30A not calibrated

Hardware
1

Hello, I have a quadcopter pixhawk and simonk ESC 30A, motor 9020k readytosky, I try to calibrate Esc but not calibrated, I test the motor A =13% throttle
B=14%
C=14%
D=8%
WHAT CAN I DO??

2

Can you explain how you did the ESC calibration ?

3

Calibrate by pc through mission planner calibrate ESc
Or by remote Control
Throttle high level and then connect battery and I returned the throttle to 0

4

Did you press the safety switch ?
Did you get any ESC beeps ?

5

why you dont try to calibrate one by one wtih the receiver th. output ? and then try again all