We've heard feedback that the current Discord sign in with the Steam overlay is confusing for new players. As such, we've replaced the existing sign in system with a new launcher:
Now when you launch the game for the first time (and you haven't purchased the game or the DLC), you'll be asked to either sign in with Discord or purchase the optional DLC to skip login. Once you've done either, you won't get prompted to sign in while playing the game.
In addition, this means the main menu is much more responsive for players who are signing in with Discord, as the license check is only done once.
If you have any issues with the new launcher, you can reach out to support on our Discord.