Hi,

I have had 4 TP Link Smart Plugs for a few months now and they have worked great. On Christmas Eve one of them went red and I have tried to reset it etc but to no avail. When I reset it back to factory settings I try and connect it again. My phone can see the plug but when I get to the stage of connecting to WiFi it doesn't work. I get the error screen with typo etc. Now this has happened to another two of my plugs since. All with the same issue. Unable to connect to the WiFi. I haven't changed the password on the router or anything and I have successfully connected a tablet to the router so it is definitely not the password. I have deleted the kasa app and reinstalled it, set up a new account and have also tried to connect without an account. 
 

Does anybody have any ideas? I know my router had dropped out and I reset it but one of the plugs and my bulb are still connected. 
 

thanks 

Trevor