How do you reconnect to a server on WoW

If you fail to get a connection after logging in, it usually means the realm is down and will send you to a list to choose a server. It might also hang at "connect" but the game does not go further. In both cases, you have to wait for the server to come back online.

If you want to change servers, simply click the "change server' button above your character list and choose another server.

To reconnect to your server due to lag or instability, the best way is not just to log out of WoW and log back in, but to actually reboot your PC as well.