While setting up the print portal, I decided to secure the Administration Setup page, where branding and other configurations are managed, with a password.

Naturally, I forgot the password immediately after setting it. Despite searching extensively, I couldn't find any information on how to recover or reset this specific password. Eventually, I decided to edit the settings.xml file.

Locate the line with AdminPagePassword= and delete everything between the quotation marks. This removes the password requirement. Then, set a new password and make sure to remember it this time.