I've never used this, so I'm hoping it can go to a good home that'll enjoy homemade ice cream, sorbet, or frozen yogurt.
Unfortunately, I don't have the box or manual, but you can easily find videos or descriptions of how to use it online, like these:
https://www.youtube.com/watch?v=4vJmsmCZzaw
https://www.best-ice-maker.com/blog/koji-ice-cream-maker-the-ultimate-guide-to-delicious-homemade-ice-cream