Brother HL-L2360DW login issue

Hello, I'm following the instructions at the link below and attempting to setup my printer on Ubuntu 16.04. When I get to the section stating to select: "Modify Printer" I am being prompted to login. According to the instructions I only need a password, but this is not correct it is also requiring a username. What is the default admin username for this printer. I've tried everything and cannot get in.

I was able to go into the main console and set a password, but I have no idea what...

Brother HL-L2360DW login issue