Hi Ma, Thanks for contacting Google Play Developer Support. I see that you are finding a way of reply and view this 1-star rating. However, when user left a rating without comment, you can only see the rating, and not being able to reply to them. Please note that it's comply with our Comment Posting Policy if user leaves any ratings without comment. The Comment Posting Policy is available here: https://play.google.com/about/comment-posting-policy.html Sorry for any inconvenience this may cause. However, if you see any comments that you feel may violate our Comment Posting Policy, you can always report back to us.