You have connected AdConnector to your Google account:
You can download your Google invoices directly from Google. You will also usually receive an email with the invoice as a PDF directly from Google. You can find all further information here: Google Ads Help.

You have created a new Google account with AdConnector:
Your Google invoices are made available for you directly in the AdConnector customer account under the menu item “Invoice”. The invoice is usually available to you. ready for download within 7 working days of the end of the month.