The plugin adds the 『redirect_to』 parameter to all login and logout links in front-end. The value is the URL of the current site. Thus you』re redirected to that site after login respectively logout. But if a link contains already a 『redirect_to』 parameter, the plugin doesn』t change it.
The Plugin affects only the links in front-end. These in wp-login.php and in admin back-end aren』t touched.
The plugin hooks into login_url and logout_url. Your code has to call functions which make use of that filters. For example wp_loginout.
