I have free license key (pdf express viewer), but still showing watermark

[system]

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:

• Integrating PDF.js Express Viewer with NPM
• Integrating PDF.js Express Viewer into an existing Angular project - Prerequisites
• PDF.js Express Viewer Overview - What is PDF.js Express Viewer?

APIs:

• Core - preloadPDFWorker(pdfBackendType, workerHandlers)
• PDF.js Express Utilities
• Core.AnnotationManager - importAnnotationCommand(xfdfString)

Forums:

• I have license, but still show watermark
• Can I remove pdfjs.express watermark from viewer?
• Can I remove watermark from PDF.js viewer (free version)?