You may receive security warnings when accessing your cPanel through:

https://domain.com:2083

This might happen due to using port 2083 along with your domain name rather than a domain name of type *.sgcpanel.com. The sgcpanel.com domain name is the host used for the SSL certificate encrypting secured cPanel connection on SiteGround servers.

However, the connection is still secure and you can safely accept the certificate permanently. Additionally, you will be automatically redirected to the correct secured URL if using a standard link for cPanel for your account:

http://domain.com/cpanel

This will automatically redirect you through secured connection, it will open the cPanel login page and no SSL warning will be displayed.