[galaxy-dev] Authentication issue

Dear all I have an issue today, with authentication in our galaxy instance. I restarted our instance and now new user can not be auto register automatically. I am using the ldap of our institute, old user can login but when a new user wants to login it says user or email invalid however I saw on the terminal that ldap authentication is successful. Do you know if someone had the some issue or problem with the the database. Thanks in advance Mohamed