Hi,

Please reset the Smart Wi-Fi LED Bulbs to factory defaults:

1. Turn the light switch controlling the bulb to the OFF position.

2. Flip the light switch on and off 5 times at a slower rate.

After that, please reconfigure it via the kasa app. 

https://www.tp-link.com/en/support/faq/1233/

If still failed, please show me the error message or the picture where you got stuck.

May it work and have a nice day. 

Duke510 wrote

Just bought first bulb LB110. It blinks three times but fails to get connected with app. Please help. Thank you