Confused, moved my server at gameservers

I moved to experimental from legacy. how many versions are there? is there a default version also? gameservers said i should not be on experimental or legacy but default. how can i launch default ?

There is currently 3 version of the game.

  1. Legacy
  2. Rust (formerly known as experimental)
  3. Experimental (steam switch for Beta)

Number 3 is the one that get live changes as they are committed to the game. I am guessing this is the one they are referring to. I am running Option 2 for about a week with gameservers. I know legacy and the new rust are separate costs and servers for them.