The email address that your account has been registered to cannot be changed/switched to a different address.
This policy ensures account security and prevents unauthorised changes. If you entered an incorrect email address during registration, you must close the account associated with that email and create a new one with the correct email address. Additionally, accounts created using Steam cannot have email addresses added or linked. For further assistance, you can contact Duelbits support by emailing [email protected] from your registered email address.