From what I have learnt through various questions and interactions I have found:
1. Notifications are not available on browser and show only on mobile apps
2. Notifications for app or browser based control are not issued - sensible logic
3. BUT can we get clarity on notifications showing inside app and in global notification window on Android phone - when they show on either and cannot we make it always log on the app window - to check history, it helps a lot in checking and from security point of view in addition to trouble shooting. Sending notifications to 2 places and where one can be be temporary is not clean design unless Android stubbornly disallows it
4. Saving notification logs option would help - business premises - banks, ATM kiosks, offices, hotels and residences will appreciate storing/saving logs and not lose any notifications. I hope I have clarified the benefits and your sales will soar if this feature is there and advertised on this point itself.