I have pdf with 132 pages yet only 10 pages are loading .I am using your default template
could you write a link to your page?
http://ethos2.eblue-hosting.co.uk/my-account/ login to this with username : email@example.com and password : admin@12345 and open this link http://ethos2.eblue-hosting.co.uk/loading-flipbook/?pid=http://ethos2.eblue-hosting.co.uk/wp-content/uploads/19-01-21-Ethos-13-Pages-LOW-RES-For-Nick.pdf . the pdf is of 132 pages (http://ethos2.eblue-hosting.co.uk/wp-content/uploads/19-01-21-Ethos-13-Pages-LOW-RES-For-Nick.pdf ) but i can view only 10 .Also note i have increase max_input_vars 10000 but still no problem was solved
you use another plugin.