The billing email address is the address of the person responsible for payment.
The billing email address may be your email address, which you used to register as a provider or the email address of your supervisor/primary provider or a billing person.
Please note that only emails that are registered in the system as providers can be used! Otherwise, you will see the following error message:
If your supervisor/primary provider or a billing person are not able to sign up to the system, one more option is to forward the receipts afterwards.
Make good use of the link with more detailed information: