Please follow these steps:
– in HMWP Start Tab, click on “reset settings to wp” button
– in HMWP Start Tab, select “Medium Privacy – More Compatibility” scheme and save the settings
– in Permalink & URLs tab and set “rename plugins” option to “all plugins”
Note: Assuming that it’s WP single site and Apache server. Your site’s htaccess file should be writeable. Your new login URL will be http://www.yourdomain.com/wp-login.php?hide_my_wp=1234
If you’re still having the issue, then please let us know your website’s wp-admin login details as Private Reply so that we can look into the issue further.