We do not encourage you to change your registered email address. But if unseen circumstances require a change, you must send an email to our Customer Support Center at Support(at)FieldEngineer.com along with your new email address. The body of the email should contain the old email address and a request that the Customer Support Center change the email address. A verification code will be sent to your new email address; upon confirmation of your verification code,the email will be changed.