I don’t think Android 15 is the real issue. As said, I have been on Android 15 since it was officially released for the Google Pixel devices (last year), I always update the monthly security patch (company policy) and everything in the Focal/Naim App has always worked fine. Only with the update to the 7.4 version things went wrong. 7.3 worked fine on Android 15 and the February security patch. Hence I really think the issue is in the Android version of the app.