Looks like the plugin has an issue with identifying the home page and updating the meta tag accordingly. I opened the page Wall Breakers in the page edit window and updated the meta description to
“Wallbreakers gives you security and encryption services to protect your browsing. Now your Network Administrator or Boss cannot see your Online activities.”
and now the meta description shows up. You may have to enter the title as well for the page Wall Breakers in the page edit window under Infinite SEO box. That should stablize the description that appears in the search engines as you go about updating the site. Hope this helps.