The app in question is this one. https://play.google.com/store/apps/details?id=uk.co.quarterstaff.psr
This app does not collect data about you at all. It does not access data on your device. It has no permissions to send it onward. I cannot improperly use or accidentally leak what I don’t have.
Google provides me with some summary metrics about populations of users as is standard for all apps on the play store. If you want that removed, you should to talk to Google about how they gather, store and process your data.
Other app stores also host my app. I didn’t ask them too. I have nothing to do with them. If they have modified my app then I can’t be responsible. I don’t know what data they gather on their platforms.