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This is the only undetectable membean userscript that I have seen. How the other "cheats" work is they click a hidden button that the membean devs purposefully put there to catch cheaters! This script is undetectable because it works by clearing the cookie that remembers when a question is answered incorrectly. What this script essentially does is deletes a cookie, which is something that any user can do manually, so it would not be possible for membean to detect this in it's current state.
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Hey, It used to work but is getting the answers wrong now. I will legitimatly pay you to fix the code so it works. Thank you. Reach out to me at mocknyc@gmail.com.