I changed my domain name. Do I need to change my account username?
destination source:https://www.siteground.com/kb/i_changed_my_domain_name_do_i_need_to_change_my_account_user/
When you change your primary domain name it is not necessary to change your username as well.
Furthermore cPanel\'s function for changing usernames is not well supported and we don\'t offer it at all.
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destination source:https://www.siteground.com/kb/i_changed_my_domain_name_do_i_need_to_change_my_account_user/