Whilst we try our best to support the most up-to-date beta builds, this isn't always possible.
If you are using a beta version of Minecraft and are unable to join The Hive, you will need to downgrade to the most recent stable version of the game.
If you want to downgrade from a beta version, you will need to opt-out of Minecraft Beta. You can find information about opting out here.
Information about what versions of Minecraft we support can be found here.