Which product are you using?
PDF.js Express Viewer
PDF.js Express Version
Detailed description of issue
I integrated PDF.js Express Viewer (free version) to my web application and provided the license key but watermark “pdfjs.express” still appear on every pdf pages.
How to remove the watermark? Do I need to purchase license for PDF.js Plus?
Does your issue happen with every document, or just one?
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Ok, I found answer here (Can I remove pdfjs.express watermark from viewer? - #5 by Steven)
I am sure I provided the correct license key for books-owndays.com but watermark still display. Please help.
I downloaded and integrated PDF.js PLUS instead of PDF.js Viewer to my project. Fixed now
Let me know if you run into any other issues.