Please share the .pmx file. You can try reducing the contact stiffness and even replacing force with prescribed displacement if it still doesn’t work. Otherwise, the solver may struggle with force-controlled contact problem having initial rigid body motion before contact is properly established. Sometimes it works in CalculiX and sometimes doesn’t. It may also depend on the CalculiX version.
Another user also struggled with this case in FreeCAD (although there the main issue was likely the need to have a gap to avoid generating a continuous mesh):
https://forum.freecad.org/viewtopic.php?t=94244
https://forum.freecad.org/viewtopic.php?t=94030