Whats the difference between Pro Football Focus Fantasy vs the the Pro side of the site?

Anytime I try to click on anything on the fantasy part of the site I get the error: Direct Loop page. I've emailed them and got no response. I hear everyone talking about this site like it's the best but I can't access anything on it. I want to sign up but I'm worried it wont work even after I spend the $30! Is the Fantasy side worth it?