How to obtain the API Key from the PrintNode backend?
Visit the official PrintNode website (https://www.printnode.com/) and log in to the backend using your account and password.
2. After logging in, find and click the "API" option in the top navigation bar or sidebar to enter the API management page.
3. On this page, you can directly view and copy the existing API Key; if there is none, you can click to generate a new API Key "Greate New API Key".
