Hi there, thanks for playing! Yes, just the four customers, we weren't sure if it was too easy because we knew them or just in general but the feedback leans to making it more difficult if we continue working on it.
No, we didn't have time to add an in-game element to the curses just yet so just playing on human conscious and funny disclaimers, if you can read them. The risk for the player also applies to potential failure as too many wrong guesses make customers suspicious, and they leave. You need a perfect sales score to pass; the player is essentially making risky sales to be freed from purgatory.
Expanding seemed to work for some and not others so we will have to look into it, thanks for the feedback :)