I just purchased, installed and setup a Pop Up, but it is not displaying.
Here is a screenshot of the settings - https://www.diigo.com/item/image/2eqse/dj92
Website - http://nexcup.com
I have also created an Admin user for you if you need it... I'm really not sure if this is a public forum or private support thread, so I edited to remove the Admin account info.
As well, I have tested by switching to the Twenty Fourteen theme and deactivating all plugins, still nothing.