I have been using this extension for six or seven years and have found it unbelievably helpful. Facebook changes its way of doing things all too often, but Inv Pro always keeps up. The extension is easy to use and the customer support is terrific! My Schuhplattler Kids Facebook page now has nearly 54,000 followers, and a hefty portion of these came as a result of using this extension. Update 8/6/22: I continue to rely on the extension to do my invites; I could not recommend it more highly!