Thread:Project:Support desk/User account is not registered (2)

I have a problem with couple of user accounts. I see these accounts in Special:ListUsers.

But when I click on such account I get this error: "User account is not registered"

I checked mysql database entries in wiki_user using phpmyadmin and there are proper names in the database (no special characters are used).

So I'm a little but confused and don't know what to do with such accounts.