OK, I have my new server up and running sweet, thanks to help from these forums, but I just noticed that although my sites are secure with letsencrypt, the ISPConfig 3.2.4 admin panel on port 8080 is not. Did I miss something in the original setup of ISPConfig 3 that should have been selected, because this time around I used the Perfect Server Automated ISPConfig 3 Installation ?
Did you set up the hostname and had a DNS record for the hostname pointing to your IP? Try getting a cert with Code: ispconfig_update.sh --force and answer yes when asked if you want a new SSL cert. If it doesn't work, share the output of the update script with us.