Hue Essentials Community

Ikea Trådfri Bulb and Motion sensor not connect to hue bridge

I tried following the youtube video, however, whenever I pair the sensor to the bulb it disappears from the app. The one time it found it while searching for light (the last step) the sensor was not functioning. Anything I am missing here? Had it working earlier, recently stopped working and now I can’t get it going again