take a look at this:
and finally this
Qlik NPrinting works with QlikView AND QlikSense, the version before (QlikView NPrinting was only working with QlikView).. Finally you have to upgrade QlikView:
- QlikView Desktop 12.10 SR1 or higher is supported starting from Qlik NPrinting 17.2.2 and includes On-Demand reports."
For your last question: No, there will not be an automatically upgrade, you have to upgrade all manually..