Try the following, which solved this completely for me: 1) delete the device from kasa 2) change your router DNS to Google DNS's (8.8.8.8 and 8.8.4. 4) 3) reset the smart plug (hold button for 12...

I went through all the troubleshooting, went into chat with customer support, yadda yadda yadda. After all that and an email saying they were escalating it, I and then went out on a limb and changed...