We pushed iOS app to Firebase distribution and sent invitations to every tester. Our testers followed all steps and get ready to test the app. Unfortunately, the testers get the message “ The developer needs to update their app so that it can run on your device. You'll get an email once the app is ready to test.“ once they tried to download the app to their iOS. We can be sure that we built the app as a production version.
Can you guys give me ideas for the issue?