In your list of orders, each order has a colored dot. That's the status of the order.
Green: Successful. The order is paid and the customer has their tickets.
Gray: Reserved. The order has started, but the payment isn't confirmed yet.
Red: Failed. The order wasn't completed. No tickets were created.
We show all orders, including the ones that didn't go through. This way you can see, for example, when a customer abandoned a payment. The customer doesn't get a separate email for a failed order.
Why did an order fail?
Click the order.
Under Details, look at Status.
There you see, for example, Canceled, Declined, Expired or Failed.
Want to see only successful orders? Filter your list on Status › Successful.