So pleased how this works…

Worked right out of the box, on the Divi theme for me, using sidebar and main-content IDs, and 0 for both the “additional” top and bottom margin settings… And setting disable on small screens to 981…

I did have to tweak it a bit, to keep it from putting to much space at the bottom of the posts and making the footer not able to show, but got a hint for this from someone here in the support thread, from 3 or more years ago… Setting the same sidebar ID to min height 1 pixel and important in my child theme is what worked for that…

I am a little disappointed though to notice there has not been much support response from the plugin authors for a long time… But for now giving it five stars anyway, because of how well it is presently working…