You have to create a location in order to make your printer(s) work.
You can find a text based and a video based guide below.
Text:
- Log in to your admin panel as an admin user (admp.princh.com)
- In the menu, go to "Locations & Printers".
- In the top right corner, there is a box that says "+ Create Location".
- A new window will pop up, where you can fill in the information about your location.
- When you're done, click "Create" and now the location has been added.
Video: