Hello, I’m Ron, an automated tech support bot 
While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:
Guides:- Browser support for PDF.js Express
- Set XFDF using the Express REST API - Body params
- Loading PDF.js Express from a CDN or another origin - 1) Copy assets to CDN
- I cannot use PDF.JS Express to open a PDF file by url in a Vue Project, please help me figure out how is that happen
- PDF not showing up and being replaced with Loading Modal
- Highlight Text is not working
Share how you are using PDF.js Express in your organization you could win a $500 Amazon gift card. All participants will receive 6 months of PDF.js Express+ for free. Learn more here