@Wayne-TP Phone is Motorola G8 and Android version is 11.  Sky mobile 4G SIM.

Live feed always fine and no VPN.  The playback issue when it occurs is always a fail to start scenario (ie the video clip does not begin to play at all then the network unstable message appears)  Once it does start after a few attempts it always plays OK,  So it presents more as a launch issue than poor network affecting playback in that the video does not begin at all.  Once it does it plays fine.  Perhaps the weak link is the sub G protocol between the bell push and the hub?

The delayed notifications are more of a significant functionality issue than the playback of clips.  If the push notifications for doorbell presses are not real time then it's a big deal - delays of a minute are no good and even 20 or 30 seconds is way too long if someone is at your door.  20 seconds is a long time standing looking at a closed door and will usually see a delivery driver or a visitor decide you're out and walk away before you answer.

  @Wayne-TP 

I have just checked again and although you say "if you open the app to check, the doorbell rang notification will still be retained."  this is definitely not the case.

Only the subsequent missed doorbell ring notification is retained.  So the app is deleting the original notification and only the later one appears.  This feels wrong for 2 reasons...

1. the most important audit trail relating the physical bell press activity and its timestamp is lost

2. these notifications are push notifications to the phone not 'calls' requiring a response therefore there is no need for the secondary 'missed' doorbell ring notification to be generated at all.

The actual activity is a physical press and the actual response is a physical attendance.  The push notification of the press is required but the follow up (missed doorbell ring)  notification is not as the door has been opened.  By generating a missed doorbell notification every time you are incorrectly assuming that I am not at home and have not answered the door.  In any event the second notification serves no real purpose and adds no value over and above the first notification.

When doorbell video call is disabled a single push notification per doorbell ring is perfect and having the second one only detracts from the use your product.  I therefore respectfully ask that you consider removing the second notification as part of a future firmware upgrade.

Thanks in anticipation.