I'm trying to create an SSL certificate and getting a certificate however it now says it doesn't match the input on the certificate. I successfully did this on another sub domain of mine so not sure what has happened.
You are correct, @Osiris. CertSage also reports back errors directly from Let's Encrypt, so maybe something from Boulder? I can't recall offhand any error messages from Boulder similar to what @muck9 has reported though.
To be clearer, the error I noted above was from safari when I clicked on the padlock next to the URL in the URL box at the top. It didn’t give me this error through CertSage. Should’ve mentioned that initially!
That kinda sounds like the certificate doesn't cover the (sub)domain name in the URL, which usually indicates that either the "www" subdomain name or the apex domain name (no subdomain) wasn't included on the list to certify.
Update: Not www or apex. Perhaps another subdomain name missing?