@herrroman – Heard loud and clear. We are definitely exploring an on/off option. In the mean-time you can use quick edit to set them as draft rather than published popups.
That said some thoughts on why we have avoided duplicate popup functionality:
1. So many sites have post duplication plugins installed that do work well with our popups.
2. Adding our own button then would cause your site to have 2 buttons if you also used another plugin to duplicate pages/posts.
Not sure which plugin you used for that, but last I checked Post Duplicator worked well.
We will keep it in mind though.
Appreciate the feedback.