Setting up the Yeelight light requires downloading and installing the Yeelight app and an internet connection. The trouble comes when connecting the bulb to your WiFi router to complete the setup process. After several trials, my Yeelight wasn’t connecting to my WiFi router. However, I finally managed to get it to connect. Here’s what I did; If you still have trouble setting up and connecting your Yeelight to your WiFi router, make sure you restart your router. Then you also reset the Yeelight by switching it on and off 5 times in a row. With your WiFi router restarted and setup as mentioned above and your Yeelight factory reset, you can try the setup process once again. Chances are that it will work. If you have any questions, let me know in the comments below.