Redirecting the WordPress login page
WP User Manager adds a login page that can be used on the front end of a website, typically at /login. WordPress also has the wp-login.php page where admins can login to the site, however, you might want to restrict access to this page and redirect wp-login.php to your /login page.
There is a setting in WP User Manager found by logging into your WordPress admin dashboard and navigating to Users > Settings > General > Login Settings. You can enable the 'Lock access to wp-login.php' setting and this will redirect the wp-login.php to the WPUM login page.