NOPE, wasted my $$$ there too, neither of these apps are even using the correct script to display PDF cross browser
I proved it can be done right here....
https://www.mymilitia.com/intel/construction-and-carpentry/above-ground-fallout-shelter-r16/
But i have to upload the files via FTP to my server for them to show, thats no good for members.
Here is the correct script to embed PDF ... https://mozilla.github.io/pdf.js/