I have installed the latest version of PopUp (4.5.3)
I am using WP 3.9.1
I also have used the latest versions of Firefox, IE, and Chrome
I cannot get even a simple PopUp to display.
What I really want to do is have a popup display depending on a specific referrer. That didn't work.
I then tried a simple popup with no conditions...that didn't work either.
What is going on?