I followed the description here and have successfully updated all my certs except for one:
The one which is not updated by the “renew all” commands is the first one “UCSxxx.fritz.box”, all the ones inclding my .local domain are updated.
Now I don’t know how to update that specific one and if there will be a problem if that one expires.
Also I guess that as the revoke step is optional, I can just let the other certs expire.
Thank you very much.