You may change the primary email of your Billing Account by log in to your DomainPlus Billing.
Please refer to below how to change the email to the new in charge person.
1. Login into DomainPlus Billing System at here.
2. Upon successfully log in, go to "Hello, your name!" then Click on Edit Account Details.
3. You may update the new person in charge email and some other details here.
If you have any enquiries, please do not hesitate to contact us. Thank You!