I am also experiencing issues with the Eventbrite tickets. I set up the API key, configured the event, and publish the event on my wordpress site. Everything checks out ok, and the event is sent to eventbrite properly, however the ticket information is not displaying on my wordpress event.
Here is the event in question. It does not list the ticket purchasing options below the map.
http://gameworks.wpengine.com/?tribe_events=test-event-4
Thanks for your help!