You have two ways to access your WordPress hosting account.
it’s either by going through your Hostgard account to my products, scroll down for Managed WordPress section, expand and click manage. Once in, you can find the WP Admin button on the top right of the control panel section.
Or you navigate on your browser to http://mydomain.com/wp-admin, while mydomain.com is either the temporary domain name provided by WordPress or your assigned domain name for the site, and that will directly open the WordPress admin login screen.