Why do events not state sold out when I can’t see tickets?

We may not state that an event is sold out for a few reasons, including:

The venue or Event Organizer may release additional tickets.
In the course of processing orders, we may find accounts that are over the ticket limit, need payment or do not have the correct billing address. In these cases, the order may be canceled and the seats released back into the system for sale.
The Event Organizers haven't given us authorization.