Watermark on PDF

Hi, sometimes we get PDFs with ASPOSE watermark, and sometimes they come without.
what could cause this behavior?

Screenshot 2022-07-27 183858.png (74.3 KB)
Screenshot 2022-07-27 183806.png (83.1 KB)

@hagitza

You are using Aspose.PDF for .NET in evaluation mode. Please get 30 days temporary license and apply it before importing PDF to avoid this issue.