Wiring on Ritto 7630/x0 not working with Niki opener

Hi all,
I tried to setup my Nuki opener for several hours today, without any success. I tried with the setup recommended by the Nuki app and the minimum wiring. I also tried other solutions I found, but they where detected as invalid.

With the first two configs I was able to set the opener up, it also detected the press of the opener button and the bell. But during setup, if I press open door, it won’t open the door.

I added a picture of the initial wiring. I have two cables in a and b, does this have any impact?

Happy if someone can help me,