Ref. this post: Hue Motion Sensor showing up with last activity 54 years ago in Homey Pro 23
I experience the same issue as @rwwh. My device worked fine, but suddenly did not respond to movement and in the Homey app it says that last movement was 54 years ago. In the Philips Hue app it is indicated that motion is detected “just now”. Have tried to delete and reinstall the device without success. Any advice?
