Troubleshooting Event Tracking Issues in Production for React-Native Expo App

For the MobileApps experts: We're building a react-native expo app which is already in production. We have few environments (dev, stage - which is used in testFlight and GooglePlayTesting, and Prod, which is on AppStore and GoogleStore). For some reason, we can't see any events on our prod app, even though apiKeys are configured correctly and everything's working fine on our other environments (using mixpanel-react-native package). In terms of expo, when using development build using the exact same apiKeys and configurations, it's just working perfectly, we just can't see any events from the app on prod. (we did get one or two events once a day even though we have hundreds of users). Do someone know something about this prod AppStore and GooglePlay issue or limitations? really spent hours of debugging but can't solve it 😞