Pop up does not allow page turning

I have a page displaying a flip book in the center of the page. I had to re-import the book and fix the images after the big update that happened. One thing changed that I can’t figure out how to fix however: when I click on the book and get the popup, I can’t keep flipping through the book in pop-up mode. I can only see one page at a time as a pop up.

Is there a way to fix this so that I can flip through the book even when I’ve clicked the page and brought up the popup view?

Thanks in advance for your help

https://wordpress.org/plugins/wp-booklet/