The user(Jhon) is not showing in the user list, but If I logged in as the user (as Jhon), I am able to login. and it is not allow to create user in the same name (Jhon). Please help me out.
Actually, it is possible to reuse a username – but first you must fully delete the existing account by using the “Merge Users” tool. Check the manual for details.
Regards,
Alec Smecher
Public Knowledge Project Team