Lexmark X748
Using special characters in the username on any app that needs authentication, such as Device Quotas, prevents users from logging in.
Use the correct case for any Unicode character used in a username.
If the issue persists, then search for more information related to this issue or contact customer support.
Unable to downgrade code; Green Micro
Here’s what to do when you are unable to access and log in the Lexmark Fleet Tracker main page.