Your logs have several errors. I would first resolve this one from the NPrinting engine log:
On your NPrinting engine machine, you should either apply a local QlikView Desktop license or make sure your NPrinting service account has a valid QlikView User CAL. You can use a leased license but it is not recommended as the lease could run out and stop NPrinting from generating reports
Log in as user .\Nprinting
Open QlikView Desktop
Make sure it is licensed (should not be Personal Edition)
When restarting services, quite often you might have to end the relevant tasks. I have not yet had to actually restart the server.