Rear door not centered

[G4briel]

Hi everyone,
I'm going to adjust the rear door because it is slightly off-center. I need to remove the plastic cover that covers the hook (see the picture), but I don't know how and I'm afraid to break it. Can you please help me?

Thank you
Gabriel

[steelviper]

Interested to see if anyone knows cause I also need to remove mine

[Dawntreader]

+1