Did some testing this morning on the new certs and realised that things were not working in firefox and at one point I think I saw an erro in chrome!
Problem was fire fox needed both www and non www versions of the site name. Re issuing the cert sorted this in no time!
This is how the process worked out…!
sudo certbot --nginx
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator nginx, Installer nginx
No names were found in your configuration files. Please enter in your domain
name(s) (comma and/or space separated) (Enter 'c' to cancel): www.gingercatsoftware.com gingercatsoftware.com