A user left a review saying they couldn't start my game as it got stuck on a gamepad check, even though a gamepad was plugged in. I've managed to find this user by other means so can now work with him to discover the cause of this problem. On other games on the store I think there are many reviews which are due to technical problems and it struck me that there's no obvious way to get support on an app. Could there be a link to the developer's support site/contact point somewhere close to the "Write a Review" button so users can be nudged towards that?
This wouldn't stop them leaving a negative review if they wish and I expect the majority would, but if they are looking to work past the problem it gives them a pointer on how to do so.