Hi! If you are playing version 0.10 the save feature is accidentally broken. It should work with the newest version I uploaded, version 0.11. I downloaded it myself to make sure it was working.
The roof will be fixed in a future update. Im embarassed that I didn't catch it before. The tiles are correct on every tileset except the one where they're needed, oops...
Also I would love a future spanish translation!
Thank you for playing Nocti! :D