The operating system my web server runs on is (include version): Ubuntu 16.04
I can login to a root shell on my machine (yes or no, or I don’t know): Yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel): No
As mentioned in the domain section above, my main site works but not my prefixed site. I’ve just “updated” my certificate to include addons. but apparently it doesn’t work? (used the tutorial above)
You obtained a certificate that covers both names, but that certificate is not being presented by your Nginx configuration. Instead, only the certificate covering gIdentity.net is being sent. Could you show us the exact commands you used (not a tutorial you followed…), as well as the output of certbot certificates?