3D FlipBook - Media not visible / not interactive on iOS

Hello, just trying out what seems to be a very good plugin but unfortunately one functionality is not working on our iPhone 13 Pro, iOS version 16.4.1(a)

The added media are not showing up on the page. This happens in both Safari and chrome browsers ( latest versions ) - it otherwise works fine on PC and Android ( tested edge + firefox + chrome all OK ) doesn't matter if it's audio or video.

Here is the direct link to the test page if needed : https://francuskinotesik.pl/3d-flip-book/testpdfflip/

Honestly we would gladly pay to get it fixed as other softwares plugins are like 500$ a month like publuu...

Thanks in advance devs.