Ajax login helps to add Login/Logout functionality without refreshing the page and redirects user to link that is provided in backend.If no link is provided then it keeps user to same page. If you have any problems with the plugin . please visit the support forums. Following are the methods to use this: Method 1 Use short code [WP_AJAX_LOGIN] to your Page/Post/Widget Method 2 For Theme: Use <?php do_shortcode('[WP_AJAX_LOGIN]'); ?> in your template. You can manage this plugin: WordPress Admin -> Settings ->Wp Ajax Login Manage-> Manage form