To Find an overview of your orders, go to your Backoffice -> Shop & Orders -> Orders.
There are multiple things you can see here. 1. Order Number 2. Date of the Order 3. Status of the Order 4. Number of Items in the Order 5. View the Order 6. Invoice for the Order
If you click on View, you will be able to see the Order Details and the related Subscriptions.
If you click on Invoice, you will be able to print out the Invoice of your order.