I have a Nexus 7 running 4.4.2. I have one video in my "Watch Later" list in the YouTube app, which successfully preloaded a few weeks ago. I have the preload setting activated.
I have added a second video to the list, but it will not start preloading. The device is connected to a wifi network with excellent signal strength and is connected to a computer via the USB cable to charge. The battery icon indicates that it is charging.
I removed the video from the list, restarted the YouTube app and added it again, but it will not start preloading. Any ideas?