(˶ᵔᗜᵔ˶)ノ゙
Imma list down things that didn't quite work in the game, but I just want to say first that I did find the game relaxing and I think when the bugs and user experience are fixed, it will be an enjoyable game to play.
- When I added a new Inventory Slot, the price changed to 4. However, when I went back to the book for upgrade, it returned to 3.
- I wasn't able to upgrade anymore after the first upgrade, meaning I had so much money but nothing to spend it on.
- I don't know why the amount paid by the ghosts are not rounded to whole numbers. Is it tax? Are they paying tax that's why there's additional 0.03?
- Others have pointed it out. Indicators would be really helpful to keep track of things. Show that there are only two available inventory slots at the beginning by showing the box in different shades or adding a lock icon. Change the appearance of the cauldron to differentiate between clean cauldron and cauldron with ingredients.
Now, Imma list down the things I like!
- It's a cozy, relaxing game to play. Oftentimes, there is something at stake with shop games (time, fight monsters to get ingredients) so I did enjoy playing the game that isn't fast-paced (ㅅ´ ˘ `)
- I like the little cat following me ₍^. .^₎⟆ It's soo cute.
- The art is nice! It's not quite pixel art and it reminds me of the games I used to play in Newgrounds.
- You nailed the Limitation (not quite the Autumn theme because it focused more on Halloween). I did use the Limitation to my advantage though as shown below:

I think your team did a good job for the time given. I hope your team continues the game. It has great potential to be a good cozy game. You can even add new features where you will find a secret note or ingredient in one of the mazes or you live a life outside of the cafe and introduce a world of fantastical creatures you can engage with.
All the best!
ദ്ദി(ᵔᗜᵔ)