PopUp Pro not saving popups. It just saves an "Auto Draft"

Im trying to create popups but when I click on save it deletes everything and just saves a blank popup as "Auto Draft". I have successfully used popup pro on another site. This site has latest wordpress, all plugins are up to date. Current Plugin List:

Advanced Custom Fields Pro
Custom Post Widget
Google Analytics by Yoast
Gravity Forms
Gravity Forms MailChimp Add-On
iThemes Security Pro
PopUp Pro
Revolution Slider
Ultimatum Connect WooCommerce
White Label Branding for WordPress
Widget CSS Classes
WordPress SEO