I'm testing this plugin. I've realized that the popup only shows on homepage and on pages, not in posts. I've setup all the stuff not to be restrictive, but even in this case (and development mode and logged in, of course) the popup only shows in what in wordpress is defined as "page", but not in "posts". It may also be some incompatible plugin, but with these hints, do you have any clue about what may happen?
Thanks and regards