3D FlipBook - Hi, I already tested the free version but the HTML doesn’t work. I saved a web page on HTML format, then I created a new

Hi, I already tested the free version but the HTML doesn’t work. I saved a web page on HTML format, then I created a new book using the HTML, then I created a wordpress post using the corresponding shortcode, I obtain the first cover page with the thumbnail, but licking on it the HTML page cannot be loaded it loops). Any restriction on using the free plugin? In addition please could you tell me the differences between the free version and the payed version? Thank you.