How can I greyed out the email field and empty the username field at this page?
From this page, I don't want user to change the email as they already use the email form their social account.
Also form this page user are required to enter their username.
So we need the field to be empty, not a pre-filled field with the email. Most of the time user didn't know they need enter username if it is pre-filled.
See attached file.
Thanks for any help