Some apps that do some kind of scheduling display the alarm clock icon.
Do you have any app set to do something at a given time? Maybe an automated backup or some kind of automation?
Some apps that do some kind of scheduling display the alarm clock icon.
Do you have any app set to do something at a given time? Maybe an automated backup or some kind of automation?
You can also just block YouTube in your unifi firewall/router for that one client.