It’s my understanding that you can make bug fixes to your submission up until Oct 5. I believe that’s what the organizers said in Discord.
Also, since this was made in Unity, is there a way for you to export a Linux version? I think I heard it was easy to do in Unity. I’d love to try the game.
For what it's worth, if you'd like to try again, I updated the game's page with a new version of the game with Unity's new input system, and I was told it now works with other controllers! :)