I have a problem with welding connector.
I understood the method: the first body selected is a shell or a sheet and the second same thing and body volume.
If I understood the principle, it is at the intersection of the projection of the first face selected on the second selected face that it creates the weld bead.
It works, that's what we see in the photo (red plate on gray volume)
The problem is that it does not work with the other sheet (cyan in the photo), simulation does not find the intersection of the two faces ???