Update #4: We have mitigated the issues impacting our server capacity, which were preventing players from joining new servers. There are still login queues in some regions, but these queues are now being processed correctly and you should be able to allocate servers.
Update #1: Hello Travelers. We are aware of a recent resurgence in errors attempting to connect to servers. We are reverting a recent change in conjunction with further investigating the issue. We will update you again once we have more info.
Update: We are still working on a solution to the login issues. As soon as we have a solution and people are able to login, we will update you. We apologize for the headache, and are working as well as we can to resolve it. :)
Update: We are now seeing some improvements for online login and Matchmaking and we are continuing to improve online login success with further fixes. Offline Play should now be available for everyone. We will provide another update as soon as we have one available.