@jlaguna and @Emmet and @jekratz Our problem is solved. We got the update this morning: 3 March 2022. So now we also have native apple silicon. I can see this in the system overview (click on about Apple, system overview, apps) and I can see this in de Activity Monitor. It is also another version number, no longer 142.4.4197. So there was an update this morning and everything is working fine.
Thanks to all!