I used the free WP-Popup plugin on a beta site (http://beta.hearusnow.org), and it worked fine (loading from the page footer). We then purchased the premium version and loaded it at http://hearusnow.org. It appears that the plugin has loaded okay when I view source, but the popup doesn't appear for me when I view the page. I originally tried it restricted to logged in user, but removed that restriction and still don't see the popup. I'm using the same browser to view both sites.