There are two places:

  1. CPF or CNPJ: enter it in My Account, in the CPF or CNPJ (for tax invoice issuance) field (your Brazilian individual or company tax ID), and click Save changes. This is the information that appears on the tax invoice.
  2. Invoices: in My Subscription, click View invoice history. Each charge shows its date, amount, status and invoice link.

To request a tax invoice for a specific charge, or to correct the details on one already issued, contact support.