Monitoring changes in pop-up banner

I want to Monitor changes in pop-up banners (banners that display on the home page after a short delay), but I can not see the pop-up or how to select in using the Chrome banner extension. How do I do this?

@ddinnsen can you share an example of the page where this banner shows up? i will check it out and let you know how to monitor.

btw do you need to use the browser extension for this or will cloud work for you too?