Update - 1:45 PM AEST: The nether custom biome is now installed onto the survival server. Adding the end biome is still be worked on by the admin team.

The update was not implemented onto the server. There was some unintended consequences that could not be rectified.

In the meantime, the normal nether and the end have been reset.

The Admin team is looking at how to implement these custom biomes onto the server.

Keep an eye on the forums for any updates!