I don't have folder called "userprofile" (just what username? in the game or in itchi.io?), sorry i'm bad on PC... otherwise my username is "The owl"
No, %userprofile% refers to your PC's user.
Anyway, you can try: right click on CummyBender icon - Run as an Administrator (Exécuter en tant qu'administrateur). Then try to save in game. If it doesn't work, then the locale is the problem or some permission restrictions on your PC. That game is pretty old, and wasn't updated in years...