Hey @mariej
I encountered this problem as well. In my case it is linked to the site URL being different to the installation directory (found under the General settings option). If I change the site URL to the installation directory, then I can edit and make all changes to menus.
The Twenty-Twenty Two theme seems really broken for me in this aspect as my site also won’t display properly with the preferred URL but that’s another problem to sort.
Hopefully this might help!
Cheers!!