Login redirect issue

I have added a button for logged in users to add an event listing. If a non-logged in user clicks the button, they are shown a notification telling them they are not logged in (see screengrab 1).

The login link points to the WP login (wp-login.php), rather than the GD login page, so if a user does try and login, they eventually end up seeing a 404 page (once they’ve logged in, the redirect looks messed up). How do I change the login link to the GD login page. In Geodirectory settings, the login page is set to the correct page.

Thanks!