Pinterest Pinner Operations Specialist interview questions

I applied online with a resume, cover letter, and the writing supplement. I was contacted within 2 days by a recruiter who was with me for the entire process. She gave me a writing assignment which was pretty much a case study of how to prioritize emails from Pinterest users who were reporting offensive content, experiencing technical difficulty, ect; I was given 3 or 4 days to do the assignment and submitted it. After a few days, I got a very vague rejection email from the recruiter. I asked her for feedback on why I was not selected but I was not given any specific information.