SERVER IS FUNCTIONING NORMALLY
If you receive "Failed: Bad host" when logging in, you will need to update to the latest game version (from ⬇ Download Early Access).
If you have problems connecting, make sure that your firewall isn’t blocking network traffic. Some firewalls automatically block traffic when in full-screen mode without displaying any prompts. Try again, this time running the game in a window (it’s an option in the “Graphics” menu).