You can download invoices for all completed orders as a customer within the My purchases section in your Legiit account.
You will filter your orders by a custom date range up to 90 days and be able to download invoices in bulk to your computer or device.
After you've selected your custom date range, click the "Download All Invoices" button on the top right of your purchases page: https://legiit.com/buyer/my-purchases (pictured below)
For help or questions, please click on the purple chat icon on the lower right side of your screen, then "Customer Support" or contact help@legiit.com