Yes! Have done all you've mentioned and still keeps telling me incorrect password. When I tap the WiFi network it then connects without having to put the pw. And worst, I have to manually check because I can't tell if it's on or off and is just burning through data like crazy.
Since today it also says connected without Internet when every other device is fine. Have to switch off auto reconnect and back on and even then it lasts all of 5 minutes.
Getting seriously fed up