I'm testing the plugin but the effect doesn't appear on my post
If you have set the effect to appear, say, once every 3 days for your visitors, and then it appears for you once, then the effect will not appear for 3 more days. You can click the "clear my history"...
The outside URL is not loading. A wheel appears
Some sites don't allow to be included in frames. Google would be one example. If you want to link to a site, please set up a message with a link to the site, and that should work.