Add Contact Form to Pop Overs Plugin

Hello,
i'm currently in the process of trying to configure the popup plugin withone of my websites. My goal with this is to add a contact form to the plugin (i.e. JetPac, Contact form 7, and ideally Gravity Forms). Currently when you instert the shortcode that any of these services generate, the pop over window that shows just says [contact-form] and no actual form pops up. How can I configure this?

Thanks