Had been using this plugin for about 13 hours. I didn't see any Adsense income at all today, that was unusual for me. I was so curious then decided to try accessing my site using Firefox (I use chrome). No adblock addons at all. However, ads on any pages were hidden. That answered my question why I didn't see any adsense income this day. After uninstalling the plugin, the ads shown up again. Weird! Was so dissappointed. :( But that's a valuable lesson to me. Not gonna use any of such plugins anymore.