Out of the blue, all of a suddent none of my Apple devices iPhone X and iPad which are on iOS 14.2 stopped connecting to non-apple WiFi routers. Both can connect to my old Apple routers but coverage is not that good. I have Ubiquity UniFi WiFi which works great and stopped working. Tried reset NW and tried to non-apple WiFi. Complains about "Unable to connect to my-SSID". Yesterday morning I restarted Ubiquity router, switch and today all connections cannot make connect. But the existing other devices that were already connected continue to work. This is strange and right now upgrading to iOS 14.3 and it's taking forever.