Popup Pro + Mailchimp Integration

Hi, I'm having a little bit of a problem. I'm using the PopUp Pro plugin with the MailChimp Integration plugin. When I submit the form in the popup it's just refreshing the page with this added to the end of the URL: #incsub-mailchimp-shortcode-form-2

I also have the mailchimp integration form on a separate page and it's working fine there...

Any help would be greatly appreciated.