Open Billing, then the billing-information section, and replace the recipient with a monitored company mailbox. Save the change and reload the page to confirm the complete address. This address receives billing communications; it does not become a Nonli user and should not be used as a shared login.
Update the address before the next invoice or renewal notice. Ask the mail administrator to allow Nonli messages and check spam, quarantine, forwarding, and group-delivery rules. Previously issued invoices are not necessarily resent automatically to the new recipient.
If you cannot edit the field, your role probably lacks billing permission. A company administrator can make the change. When delivery still fails, send support the company name, recipient domain, expected message type and approximate send time—never the recipient’s password or mailbox access.