Amazon Senior Software Engineer interview questions

I had a call with a recruiter and then a month later the interview was scheduled, this was a coding interview that consists of 2 parts the first part is more of a situation based (tell me a situation when ..) i think i answered these very well the rest was a coding problem (very easy) i managed to solve and got a very good performance (time and space complexity) got a reply the second day saying that they won't go any further with my application but they didn't say why, i wish they could have sent some feedback because it is really bad when you don't know the reason