3D FlipBook - PDF loading is stuck at 84% and bottom bar is missing

I bought yearly subscription, I was using free version and everything was working perfectly. I replaced the pro files and not I am facing issues. 1- PDF loading is stuck at 84% while PDF is completely loaded, seems the popup message does not disappear. 2- Bottom tool bar is missing and I can not use zoom, next/previous controls.

See below link: https://nativetribalart.shop/NTA-Web/catalog First catalog it will be stoped at 1%. Second catalog stuck at 84%