Hello, My book is not showing… It says that it is an error page. Here is the link: http://www.martialartskickboxing.com/3d-flip-book/ma-fitness-sales-book/
It seems like your theme does not support the plugin (non standard post types). It is not a problem try to insert it into a post or a page. Have a look at this http://3dflipbook.net/wp-user-manual#insertion-pdf-book-fullscreen.
Thank you so much for your quick response!
One last thing… For some reason the book is not showing the first page now. Look at the online book here: http://www.martialartskickboxing.com/sales-book/
this is how the book from the PDF should be: http://www.martialartskickboxing.com/wp-content/uploads/2017/05/MA_SalesBookv2.pdf
Try to update the plugin (download the new version, delete current version and install the new one). It seems like you use old version. There were some problems with page order.