3D FlipBook - Having issues with CORS with PDF uploaded to AWS

Hi,

I've search for this question and I've found 2 of them which wasn't solved. Basically, my issue is that I want to display PDF uploaded from AWS (with the Wordpress plugin Offload Media). I've already checked your video: https://www.youtube.com/watch?v=U2nFc4Ksjuo but is really old and everything has changed in AWS (section, names, code...). So can you please help me to let me show PDF in AWS without the CORS issue? What should I place and where?

Thanks!