I bought this game specifically during the ALPHA to participate in the development.
Everyone agrees to this statement each time the game is loaded.
"WARNING: THIS GAME IS EARLY ACCESS ALPHA. PLEASE DO NOT PURCHASE IT UNLESS YOU WANT TO ACTIVELY SUPPORT DEVELOPMENT OF THE GAME AND ARE PREPARED TO HANDLE WITH SERIOUS ISSUES AND POSSIBLE INTERRUPTIONS OF GAME "
You also have two different version, Stable and exp.
Push the update.