Sometimes I know there is something wrong with my app because someone writes a bad review, but I can't do anything about it because I can't contact them to figu

Sometimes I know there is something wrong with my app because someone writes a bad review, but I can't do anything about it because I can't contact them to figure out how they got that problem. So I made the "contact us" functionality front and center in the app and started getting a lot more direct feedback.