Malware Removal

I want to know that is there iThemes security plugin is capable to remove malware from my active site. Because my website is under-attack and shows there is malware on my website by checking iThemes security plugin. If yes then I’ll buy a premium account for iThemes. If this plugin failed to clear my website from malware then is there any refund policy?

The page I need help with: [log in to see the link]