Easily mark any post or a page as "for logged in members only", hiding it from public view! (not for custom post types).
Simply tick the checkbox shown at the post/page edit screen.
UN-tick the checkbox shown at the post/page edit screen.
No, You simply activate the plugin, and let the plugin work for you.
Make sure you have PUBLISHED the post/page and that it is not "draft" or "private".
Check your screen settings. Make sure the "Show this to logged in visitors only?" is ticked. (screen settings is found in the tab in the top right, below your "hello username").
Did someone deactivate the plugin? Try activating it again!