I was having the same exact problem. It turns out the post number I was trying to include had changed or I typed it in wrong. Looking up the exact number solved the problem.
i.e. make sure you have posts with 84,86,88, and 90 id’s
(i bet it will work if you take those out)
Might be a way to just skip the post if it is not found rather than throwing an error message ;). -or- showing an error message in the backend plugin settings with a link to the page with the problematic shortcode would be even more helpful.
Hoped that helps.
Yeah I tried to do this as well. I click the button edit timestamp on start or end and they all reset when I save the page in wordpress.
I would love to be able to use this feature and am not sure how to go about it or if there is a problem on my end.
