I checked your site’s page source and see that WP default paths are not being replaced. Please follow these steps:
– in HMWP start tab, set ‘Medium Privacy – More Compatibility’ scheme and save the settings
– in HMWP permalinks & urls tab, set “rename plugins” option to “all plugins” and save the settings
Note: Assuming that it’s WP single site and Apache server. Your site’s htaccess file should be writable. After applying above settings the backend login URL will be http://www.YourDomain.com/wp-login.php?hide_my_wp=1234 (you can change secret code “hide_my_wp=1234” from general settings tab)
If it’s still the issue then please let us know your website’s wp-admin login details (as private reply), so that we can look into it further.