How Do I Pause My Popup?

Pausing your popup is simply a matter of changing the "state" of the popup to anything other than "Published". Currently, there is no way for you to pause all of your popups with one broad stroke - they have to be paused individually.

Navigate to the Popup Editor for the popup(s) in question, and change the popup from "Published" to anything else, then click OK, and then Update. Until you change it back to published, it will not be available on the front end to be triggered.