Hi there. If a previous email was receiving these emails but no longer is, you may need to create a new email. You may need to use a major email provider, such as Gmail or Outlook, to receive the verification email. Apple/iCloud emails seem to be blocking Bungie Reward emails at the moment. We're working on that.
I've got gmail account but I can't change it because you sending verification e-mail to my old e-mail.