The chat is being translated, but only to server language on Hurtworld.

  "Force default server language (true/false)": false,
  "Log chat messages (true/false)": true,
  "Show original message (true/false)": true,
  "Use random name colors (true/false)": false​

Sorry for the delay! With Hurtworld, players would need to set their language generally for it to know which to use. Not all services have auto-detection, so encouraging them to set their language with "lang xx" in the chat would help.

Otherwise, I would need more info to help.