I thought I could help out a bit here.
If you go to the company home page here you can watch the 10 min video that shows everything this version does. This video shows the pro version (paid), the free SecurePress plugin that you are using does not have all the features of the pro version. Namely blocking.. but it will explain how it works and how it blocks and reports crime.
So this free version only lets you install and monitor (view) hacker traffic and attack attempts against your site. The idea is that if you like the stability and quality of the free version, you would upgrade to the pro and enable all the features including BLOCKING attack attempts.
Hope that sheds some light.
