Supporter text gets messed up after install

Hello

I just installed the supporter plugin to my new website http://www.blogbowler.com, that I'm currently working on. I got the plugin setup and then visited the signup page to see how it looked like.

Take a look here: http://blogbowler.com/register
As you can see the heading for the supporter part, Pro member is in between the two columns containing the additional profile informationer and signup information.

How can I go about moving that down so that it starts in the correct position. I'm sure it's some css problem?

Please help.

Thanks
René