After generating the certificate, When I testing my certificate with sslshopper, i am getting the below warning and no errors on generated certificates for my domain.
None of the common names in the certificate match the name that was entered (mydomaintest.com). You may receive an error when accessing this site in a web browser. Learn more about name mismatch errors.
you probably issued a certificate not matching the domain name you are using. Or if you manage more than one site, probably using another certificate from another site which is of course not valid.
Can you access your site via a browser? Be sure to use https. https://mydomaintest.com. Can you report what you see?