3D FlipBook - mobile version white screen and control elements panel in the desktop version

I have installed the 3D FlipBook jQuery Plugin Pro Version. Use for PDF. I can see the PDF in the desktop version. But the panel with the control buttons floats to the left instead of being in the center. And I see the white sreen in the mobile (I've renewed the browser cache, it didn't help) the page is https://nachalo-journal.ru/archive/svoboda-i-otvetstvennost Could you please advice how to resolve the issues. Thanks in advance, Elena.