Attempting to access your cpanel account via http://yourdomain.com:2083 may cause your web-browser to give you an SSL warning stating something along the lines of:
yourdomain.com:2083 uses an invalid security certificate.
The certificate is only valid for serverX.purenrg.com
This is because the SSL certificate used for cPanel has been issued for our server name, not your specific domain. You can either accept the certificate as presented, or you can access cPanel via http://yourdomain.com/cpanel (which will forward you to the cpanel system using our server name, and no SSL error will occur)