Use the default admin credentials (often found in the manual or on a sticker on the machine). License Management:

Searching for "new registration keys" on third-party forums often results in:

If you're having trouble finding a registration key or if the software no longer meets your needs, consider exploring alternative solutions. There are many software applications designed to manage print jobs, improve office workflows, or offer advanced printing features.

If you are a student or a home user on a shoestring budget, . It is free, safe, and does not require a key.