Suddenly 2 accounts on login screen

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2 accounts appear on my login sceen, one with picture and one without with the same name. The one with picture works when entering sign in options, although I unchecked : users must enter username and password. This happened for the first time today and I wonder how to fix it. Maybe someone can help me out ?
Thanks in advance.

 

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Sorry to have asked the question, found the solution, checked the option users must enter username and password, applied. After that I uncheckd the same option, entered username and password and so far it's solved, hope it stays that way.