Your question is Iterating After a Design Miss. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about a time a design you shipped did not perform the way you expected. How did you realize it was underperforming, what did you learn from the failure, and how did you iterate based on user feedback or data?