Happy new year everyone.
Link account is back, it's automatic now too.
If you're new, create an account on the website, make sure to fill in your in game username correctly on the sign up page. If you did it right, logging out and back on the server will give you build access.
For existing members, please update your user settings (button on the top right whilst logged in) on the website if your in-game username does not match up.