Hi, quite a newbie here. I have installed successfully Virtualmin on CentOS 7 and am running Nextcloud, Wordpress and Lime Survey with it. Everything is working out great. Webmin/Virtualmin itself has the domain virtualmin.domain.tld, nextcloud cloud.domain.tld. and so on. It was no problem to get the letsencrypt Cert for the applications with the help of the built-in SSL functions of Virtualmin.
My question: How can I get a Letsencrypt certificate for virtualmin.domain.ltd, in other words Webmin/Virtualmin itself? I got stuck at Webmin/Webmin Configuration/SSL/Letsencrypt. The documentation https://doxfer.webmin.com/Webmin/Let%27s_Encrypt does not really help.