Hey there, brickie! Thanks for reaching out! The Itch.io version is currently on Episode 7, with Episode 8 arriving on July 1st. If you're seeing Ep8 listed in the game, it might be a typo on our end - we'll double-check that!
Regarding the Steam key, you can activate it directly through the Steam client just like any other game. If you're having trouble, we have a helpful guide on how to redeem Steam keys.
Let me know if you have any other questions or if you're still unable to access the Steam version after following the guide. We appreciate your patience as we work on bringing you the latest episodes!
Just to make sure, the game is on Steam, but did not launch there yet, so you can't play there rn. But you can redeem your key and add the game to your library so you are good to go as soon the game launches later this year.