3D FlipBook - Could someone please get back to me regarding the flipbook plugin? I have tried many times to get it to work and nothing is

Could someone please get back to me regarding the flipbook plugin? I have tried many times to get it to work and nothing is working. The only thing I can get to work as a preview then once I save it it’s then a 404 page. I loaded another PDF Pro plugin to use so if I would like to have my money back for this one it just doesn’t work