Auto Image Changing feature allow the Willow watch face to auto change background image on your watch.
To enable this feature, open the Willow setting app and enable "Auto Image Cycle"
After enable this feature, the Willow watch face will randomly change image every 1 hour while you wearing the watch.
Bear in mind that some of the Wear OS watch will auto disconnect the watch from the phone if you are not wearing it or leave it unintended. If your watch disconnect from the phone. It will not change the image.