Excuse and information:
This is for the paid, fully licensed and activated version of Helix Native:
After checking out each and every alternative here, I have to declare that
Helix Native needs no (permanent) connection (to the internet)
BUT
it needs an active network adapter (LAN module, card, WLAN-stick, [...]
If that deactivated, Helix Native won't work.
Obviously, the computer activation is dependent / related to an adapter (or card [...]).
klangmaler's post in Helix Native internet dependency was marked as the answer