Username doesn't get displayed when trying to log into the settings
When I log into my laptop I see the username (my name). I enter the password and everything works. If I want to make any changes in the settings though where I have to click the lock and log in the username doesn't get displayed and if i enter the username with the correct password it doesn't get accepted.
Did anyone have this problem already and can help me? It's really weird.
Thanks everyone!
MacBook Air 13″, macOS 10.13