To access your AccessibilityChecker.org invoices:
Go to AccessibilityChecker.org and log in.
Click on the "Account Settings" menu item on the left.
Click the "Billings" tab, where you can view all of your active subscriptions.
Click the "View" button next to your active subscription. It will provide you with an overview of all the details associated with your subscription, including your "Billing History", which is where you can download your invoices.
