To view your Squad's invoices:
First, make sure you're the Admin of the Squad, or the Billing Admin to view Squad invoices. If you're the Admin or Billing Admin, Click the 3 lines icon next to your Squad's Picture in the top left of the navigation menu.
*For more info on Roles and Permissions, click here.*
Click 'Manage Squad'.
Click on 'History' under your Squad's name to see your invoice history.