I select the pdf, but when I save the flipbook, it gives me back the 'SELECT PDF' call to action in the PDF selection box. I tried to optimize the pdf using the Adobe Tools but still not uploading.
Could I possible send the pdf to you to see what the issue is ?
Thanks.
I guess the problem on admin side, not PDF. Could you provide access to your WP? write me author@3dflipbook.net