Octolapse Alfawise U20 need settings

Good evening
I am using Octolapse for my U20. It works but in terms of settings it does not work. I would like that when I choose "Extrude center" we do not see the nozzle move and it is not the case
I think I have a problem with the settings.

Who could help me?
Thx

sample video: https://we.tl/t-p70lO3rjqt

OctoPrint 1.4.0
Octolapse 0.3.4
Cura 4.6.1
Logitech Webcam C170

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