This is a newly installed/configured server - CentOS 7.6 minimum + Nginx 1.17 + PHP 7.2 + others + ISPconfig 3.1.14p1. Everything on this server works great except I can't create Let's Encrypt SSL from ISPConfig. But, I can create directly from the command line using: certbot certonly --nginx -d www.mydomain.com. I have noticed that, ISPConfig enables the Let's Encrypt SSL if I create it manually from command line and then go to site setting and check the Let's Encrypt SSL checkbox. Is it he right way to do it? Appreciate if someone shed some lights on this issue.