You can't have QlikView Server and Qlik Sense installed on the same machine. Only 1 of the 2 can be running services on a single machine.
What is not working with NPrinting? The screenshot just shows a login form. NPrinting installed on the same machine as Sense is also not a supported configuration.
If you install Sense on a different machine and then keep NPrinting and QlikView together, they should all work.