Install license in intranet servers and remove watermark

Which product are you using?

PDF.js Express Version

Detailed description of issue
{I would like to install PDF.js Express Viewer in intranet servers (our DEV and TEST environments) that do not have access to internet and remove the watermark. Is this possible ?}

Expected behaviour
{Provide a screenshot or description of the expected behaviour}

Does your issue happen with every document, or just one?
{Answer here}

Link to document
{Provide a link to the document in question if possible}

Code snippet
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Hi there,

PDF.js Express requires an internet connection to remove the watermark - this cannot be worked around.

Thanks!
Logan