The path to the NSQ is not reachable because you must configure the full path in the On Demand Object.
Also, you need to use the NP server name in the On Demand object.
Further, you must ensure that ports 9000, 9001 are not block anywhere on your network or on the NPrinting server.
If another application is using ports 9000, 9001 this will also prevent on demand from working normally.
Finally, you NPrinting server service which OD relies must be configured 100 percent accurately.
If you continue to experience issues, please submit a support request to the Qlik Support desk.