My booklets stopped working recently. The only thing I can think of is I re-installed Jetpack for one of its features. Not sure if its related.
One example is: https://theparklander.com/3d-flip-book/april-2020-2/
I was able to create new posts with shortcodes, to replace the posts in the 3dflipbook plugin posts. That seem to work. Any recommendation on the best usage?
Write a link to the page where the plugin works. Also try to disable other plugins to get the reason.
This version works. https://theparklander.com/2020/03/03/may-2020-magazine-booklet/
I tried and disabled other plugins to see where the conflict may be. But couldn't find one that will make it work again.
Had a look one more time, just see one difference between these two pages: the first one has error in the debugging console ctrl+shift+i:
Uncaught TypeError: Cannot read property 'top' of undefined
at belowEntryMetaClass (global.js?ver=20190121:124)
at HTMLDocument. (global.js?ver=20190121:211)
at i (jquery.js:2)
at Object.fireWith [as resolveWith] (jquery.js:2)
at Function.ready (jquery.js:2)
at HTMLDocument.J (jquery.js:2)
This can be the reason. Without internal debugging can say nothing.