Is this a full CAD-program?

No, nor is it intended to be either. It uses Lines, Circles (not arcs) and Points. That's it.

How advanced is the pocket-milling cycle?

It is basic. It only supports lines as a contour and not too complicated contours.

What happens to the license if the computer fails and a new computer is used?

You can reactivate your license with the original e-mail and key.