It said something about not doing it if you've done it since (forgot, sometime late 2019). It started me off with one classified as "hard". So if they are studying how many people say "fuck it" when the first one is hard compared to easy, well, clever if unethical way of going about it.
A few weeks ago I had one of those match stick puzzles on a different requester. I couldn't figure it out for nothing. Finally returned the stupid thing.