Plugin with Massive Dynamic Theme

Hi,

I’m using one of the massive dynamic shortcodes with the plugin.
The list is set up correctly and the subscribers are being added. But my question is around the submit button on that form.

When I click submit, nothing happens. The form stays as is. I was expecting it to display a message perhaps saying the form has been submitted.

How can I overcome this?

here is the page with the form right at the bottom of the page.

http://www.futuregenleader.com/main-page-2

Thanks,