An exam preparation video that does not work

[planyway]

Thanks a lot for the great program, but I tried this:
headspace download https://my.headspace.com/player/300?authorId=1&contentId=220&contentType=ONEOFF&mode=focus&trackingName=Meditation --duration 10

and gets

Cannot download Exam Prep. This could be because this session might not be available in 15 min duration.
This session is available with duration of 3/10/5 minutes. Use --duration option to modify required duration.
(Ctrl+C to terminate)
'contentId' is not recognized as an internal or external command,
operable program or batch file.
'contentType' is not recognized as an internal or external command,
operable program or batch file.
Invalid parameter - =focus
'trackingName' is not recognized as an internal or external command,
operable program or batch file.

I tried downloading it in the pack way, and that gives 404 error. Seems like some singles cannot be downloaded for some reason.