I recently had most of my results on one particular segment suddenly disappear. Only two showed up out of several dozen times I rode the segment. I initiated a "trouble report" with Strava and over the following several weeks, they worked on the issue, going back and forth with me, to finally solve the "problem". Contact them and they are pretty responsive. (Not sure if you have to be a paid member to be able to use this service. I am a paid member.)