Details:

Version 2.2 is scheduled for release within the next week, and has required breaking changes to be made. Older versions will no longer be able to communicate with the server, and you will need to update your application to continue using it.

The Good News:

The premium server will now be enabled by default! All you need to do is update your application when the new version is released. This can be done within LegacyAI, or you can manually download it here