I have installed Android version app and I was able to see the bulb blinks 3 times, after which I see it in the list of networks available. I connect to my 2.4 GHz wifi and move forward with connection, it says it found the bulb, asks me to name it and after clicking the finish configuration, it into processing mode, the bulb then slowly blinks twice which makes me think it was able to connect, but then fails to finish the configuration. The app says the device information is saved, and when I try next time, it asks me to reset the device or not. At which point I tried both ways and started all over again. I tried the manual connection to Device as well. I tried it on my 5 GHz network connection as well. I seems like I tried all the ways I could. I also killed the app instance and restarted it again. What's is wrong with it!
And yes, I am so close to the wifi router, the signal is very strong, and I am also able to connect some of other brand wifi switches and electric strips. Just the Kasa isn't working.