The Monzo app updated during the night.
I’d received some incoming payments before the Google Play update, however, the Android notifications were not there in the morning, presumably because the app had quit and restarted because of the Google Play update.
I.e. I missed the payments coming in due to the update and was unaware until I manually checked the app.
The app should send any unread push notifications if it restarts, which would resolve this.
OS: Android 10
Device: Pixel XL3
App Version: 3.5