We've integrated Satisfactory 1.0 into our system and are running it successfully.
You'll be required to go through the Initial Setup steps in the in-game Server Manager before you can join the game.

We are preparing to integrate Satisfactory's new dedicated server software into our system. Due to there being significant alterations to the game itself, as well as changes to the software we use to host the game, we are expecting some disruptions for existing Satisfactory clients.

On December 9, 2021, a critical exploit has been announced and server software updates have been issued to mitigate a Remote Code Execution vulnerability. The best way to patch against this exploit is to update your server software to the latest version. Spigot & Paper versions 1.8.8 and newer have been updated, alongside Fabric (Loader 0.12.9+) and Forge (1.12.2+) respectively.