Videos not showing on main screen

I have a Ring doorbell with Andriod app; following problem on three Andriod devices today, two phones and one tabletSome weeks ago I had to contact Customer Services because activity was not being recognised. Eventually it was sorted but I don't know what they did.I would prefer email communication so I have a proper record of what is said.Anyway today I have another problem with the doorbell (Front Door). My Plan expires on 30/12/2021; some 10 months away.Today even though many people should have activated the videos, the videos stopped showing on the main screen at 10.41. They do show up if I goto Devices > Front Door > Event History. All expected events show there. Why do they not show in Cameras > Front Door? Note Front Door Live works but not . Wifi signal is very good; Devices > Front Door > Device Health > Test your Wi-Fi > Download 16.73 Upload 8.03 Ping 93 (Phone next to doorbell i.e. inches away and phone and doorbell on same network)Also I was standing in front of Front Door camera but still no video on Cameras > Front Door but is there on Devices > Front Door > Event HistoryAny ideas please?