I recommend using a free video screen recorder like
Freecorder. No hassle, and it will always work. Use the screen recorder part, as the Cam streams are encrypted.
If you want to get technical, you can use RTMPDump. Here's a token:
-T "#Loi8iJu"
Note: this token is for the public cam on the main page. You would have to sign-in to get access to private cams (bedrooms/bathrooms) and who knows, they could very well have a different token there!