Hi, sorry for the late reply—I just reinstalled my Windows OS because it was having some issues. :(((
The Steam version is the latest, up-to-date version. If you'd like to play it right now, you can redeem the Steam key I sent you via email.
As for the itch/Gumroad version, we haven't updated it to the latest yet, so the download you got from Gumroad is an older version.
If you'd prefer to play the itch/Gumroad version, I hope you can wait about a week or more. After we release Lancelot 2, we'll return to updating the itch/Gumroad versions, since some supporters can't access Steam to redeem the game.