My switch suddenly list connection with WiFi. I tried rebooting my router, uninstalling the switch, reinstalling the kasa app, and trying to reinstall the switch with the app. When it tries to connect to the tp link network it days the internet is unavailable with tp link hs 210 b7 cf. When I check that network in my phone wifi settings, it says connected with excellent signal strength. Not sure what else to try.

Follow up: I read a post that said to try a different phone to install the switch and that worked!