Motion sensors are a really great thing. They can automatically switch on the light depending on the brightness and time of day when you move through the room. In my home, I have activated a motion sensor in the stairwell that activates a night light for 30 seconds at night, for example.
A few months ago I had serious problems with my Hue system. I decided to do a complete reset after I was not able to register any new lights on the bridge. After that, unfortunately, nothing worked anymore. I was only able to control my lamps by light switch – if available.