Failed room inspection but we have no idea why

Yesterday me and my roommate forgot to lock the door and while we were both out of the room, and they did a room inspection. I came back and the pass/fail note was on my desk and it said “failed but will be back within 2 business days to see that it was corrected; check email for next steps” . Except neither of us have received that email on what to do, and we dont really know what caused us to fail. Nothing was confiscated, and theres no drugs or alcohol in the room. The only thing I can think of is that I have a small guitar amp but I have a headset that I hook it up to so that it doesn’t make noise. What should we do?