Unable to login and reset password: "Invalid hash given" in all cases
User Yustas is having trouble with login and password reset. He hasn't been logging in for a while. Now, he tries to login, but can't. He has email entered: firstname.lastname@example.org. He tries to reset password and successfully receives reset email. But when he enters old and new passwords, he sees permanent "Invalid hash given" message (I have attached the screenshot received from him). He tried several browsers and OSes.
Please help him. You can contact him directly at the email given, or at talk page at Commons https://commons.wikimedia.org/wiki/User_talk:Yustas