I've been having some issues with PopUp Pro's On Specific URL feature. For example, I'd like the pop up to show on two pages. The main page..
And a second page..
Unfortunately it doesn't seem to load on the latter, which seems to be because of the parameter ?page_id=2. I've searched for clues to why this might be, but it seems this isn't much of an issue for others.
I'm using WordPress 4.0, Twenty-Thirteen theme. I've tried disabling all other plugins, messing with settings and code, but haven't had much luck. Any help would be appreciated!