Review your unpaid invoices
On the main page, click "Billing & products", click "Invoices", and click the "Invoices" tab.
Click the Status filter, and select Open from the dropdown list
Click Apply
This action will display all invoices that a customer has yet to pay,
You may refer to the Due date column to confirm if an invoice is Overdue.
Archie tip: You can send an individual reminder by clicking the 3 dots next to the invoice desired. Alternatively, you can click the Action button and select "Send global reminder" to send the reminder to all currently open invoices.