Membership Plugin Signup

I have set up a membership site.

When I click on the signup button on the registration page the screen pops up.
It says "Please check the details of your subscription below and click on the relevant button to complete the subscription."

There is no button to click on and no textboxes to fill out.

The URL that I am currently working on is:
http://lagunastrategicadvisors.com/registration/

Any ideas?