Changing user name

Can anyone guide me how to change user name?. I tried to below method,

profile-> preference -> username
But i am seeing this field is not editable. can anyone know please guide me.


How to change password?

Even I want to change my email address by I can’t.

Hi Admin , can we remove three different names being shown up whenever we post and if possible have only the name and handle ( used for tagging) ?

Thank you

Hello, same problem, I am not able to edit my username. Is it even possible?