3D FlipBook - Pdf Image not loading at full size

https://agritraining.co.za/training-modules/module-7-pesticides-for-fall-armyworm-control/ > Training Materials > Supplementary Training Material.

Within the "Supplementary Training Material" accordion the pdf images do not load at full size unless a person clicks on the three dots and chooses "Single page mode". When I've used Flipbooks across the site (on pages you can't see as a person has to register) the full size image loads and isn't small and far to the right as you see on this link.

Do you know what the problem is? We suspect that there might be JS files that load after the flipbook has loaded and then skip the function in the JS code (the block of code that checks the dimensions) and then ignores it.