Login succesfully, but base won't create

I want to play on the Wrath29 server with my friends. I can log in to the server, but my base won't create. I can write in the chat, I'm on the leaderboard. I need help so I can start playing.

I've attached a screenshot of what I see on the screen.

(I can log in to another server on the same computer with the same browser and the base will be created)