The site was slow and limited. Although you may get a probe for free, the results are sparse and incomplete. When I first entered the site, I was bombarded with ads for their products. Eventually I found the area claiming to be free.
I’m always a little suspicious about sites that try to sell you on something and yet offer free services, so I locked down the firewall and revisited the site. The results were exactly the same. I sent a message to site and received a real attitude for questioning the results.
The probe claims to be free. You’ll pay with frustration.