We have a ordered an advanced certificate with Let’s Encrypt. We originally specified mydomain.com and *.mydomain.com as domains for the certificate hostnames. Now we want to add more sub-domains. It says that we have to cancel and recreate our certificate to do this (This is going to interrupt our operation, which is crazy, but that’s another topic for another day). So I delete our Let’s Encrypt certificate, so I can add it back again with more subdomains. However we’re not allowed to specify more subdomains. The input box is greyed out, despite saying that we’re at 48 out of 50 allowed hostnames. Any idea what’s wrong?
The ultimate solution would allow me to add subdomains to our certificate while it’s still “running”, so to speak. In a secondary solution I’d settle for just being able to add subdomains to our certificate even if it involves downtime.