Getting popup to work - Hustle Opt-in

I have set up Hustle on this site. Here is what I am experiencing. In Firefox, it will not popup on the main screen but displays at the bottom of EVERY page. In Internet Explorer, it pops up but is below the readable area and scrolling does not display all of it and it displays on each page. In Chrome, it popups correctly but also displays at the bottom of each page.

I assume maybe I have the settings wrong which is at least part of the problem. I am working hard to supply this functionality to my client and need an aswer as quickly as possible.

Please respond soon and thank you!