I went to your recommended site and sniffed around.
It is suspiciously like other commercial frauds that rope you you in, tell you how infected your computer is, and then demand payment immediately to fix it.
I would rather trust my Norton 360 and my Malwarebytes.
I am lucky having Frontier Communications. (phone and Internet) For free, they furnish very sophisticated virus, firewall, spam and email protection programs that work 24/7 and does a great job of it.