Sorry for the delay Blaz. I use https://wppopupmaker.com/. I have been creating loads of popups and including the Rate My Post shortcode in them. Sometimes they show and sometimes they don’t, it’s very random. Also, if I open the popup again to edit it and simply click update, without doing anything else, it magically appears. Really bizarre.
Oh boy, I feel like you’re talking another language to me. I’m a point and click type of person so have no idea what the DOM is. I Googled, but I guess I need to know where to look to see if the content of the popup is in the DOM. Can you point me in the right direction, please?