Hi, sorry for not being clear, I’ll try ro explain.
In webmin, there’s the way ro set the ssl certificate for the webmin interface running on port 10000, which I have provided my self signed certs for, in a directory of my home user. When I make letsencrypt get a certificate for the websites that apache is serving on port 443, I have to select the option “no” in “copy new key and certificare to Webmin”, otherwise webmin will then use that certificate for the webmin control panel. When the cron job runs, that option does not seem to be being checked, and so the webmin cert (my self signed cert) is overwritten.