In World of Warcraft, a ticket usually refers to an active Help Request submitted to a GM for an in-game support.
1. Click on the marked "?"
2. Select "Open a Ticket".
3. and then "Open a Ticket".
4. Say hello and without sparing any details, describe your problem and submit it.
5. There, you'll notice a small panel indicating that we have an open ticket, which is expected to reviewed by a Game Master.