This is busted! 💔
Response from developer
Due to some misconfiguration, the app was failing to show any item to users in certain countries for a limited window of time. We have already identified the cause and resolved it. If the app still fails to show any item, would you mind letting us know which country you are using the app in and your App Store country setting (if set different than your location's) ? We apologize for the trouble and are eager to do our best to make it worth of your time. In any ways, we seriously take these potential flaws and are working on to keep that kind of annoyance from happening to anyone as much as possible. Thank you again for your feedback and we do our best to make this app work for you too.