We do not provide access to the 'WHM -> Modify an Account' screen, as this has a number of security flaws.
However, to circumvent this, we have provided an interface within our 'Central Manager', which allows you to update either the username, or the domain of any cPanel account.
Client Area -> Reseller Tools -> Central Manager
From here, select 'Manage' next to the account you wish to make the change, and click '
Edit Username / Domain'
