How to adjust the Eket door gap② Adjusting the stopper

I made a HP about IKEA Eketo problem and countermeasures.

What if the door installation fails (how to remove it)?

IKEA Eketo assembly instructions

Item Number:
Item number
003.737.40
Item number
193.880.01
Item number
294.944.78
Item number
503.321.15
Item number
593.880.04
Item number
703.339.39
Item number
793.861.36
Item number
803.339.53
Item number
892.846.51