There are those that post on the forum that think Nuvyyo purposely hides and doesn’t provide the source for a GNU license software that requires the availability of the source.
At least one poster who thinks that all http servers are covered by GNU. Maybe it’s not you.
A post from TabloTV commenting the firmware involves linux
You posted the same links I did, resulting in the 404 if you follow the URL in the agreement… I do see your conspiracy, if you distract enough, who cares