Can anyone help me decode the audio from Showmax.pl?

Is it encrypted with widevine? Should be possible. But the site seems to have no public content.

All you need is a free account and free content is available. The first episode of the series.
https://www.showmax.com/pol/play/f7ad1596-432d-4779-817c-963be1d660e1/e0bc544c-799e-46b2-b64c-2f99fa62d452

The question is whether you can do a showmax web-dl by modifying NFTool ??