I can't figure out how to use this plugin. I've set up both custom content and opt-ins. I can't get them to save all of the settings nor can I get it to show up on the pages using rules or shortcode. My site is carceron.net. I did not build this site originally so I'm hesitant to test too many theories as I'm not a highly qualified developer and if I break it I'm not likely able to fix it.