I was using Certbot to create an SSL on my website before. But after an upgrade of my server, ISPConfig's default SSL issuer used acme.sh. So, how can I renew site that already expired or about to expire using acme.sh?
ISPConfig keeps using certbot on systems that used certbot before. You can not switch to acme.sh without losing all certs, so just keep certbot installed. Most likely, you uninstalled certbot as that's the only reason why the system can have started using acme.sh.
