I am looking for an answer to this too,
How to restrict Youtube from the TIVo Box or through simple internet access.
I have set a restricted profile on the TV but with other devices it is too accessible.
YouTube to the little ones seems to be like sugar to ants.
Welcome to the Community!
At the moment there is now way to completely block the YouTube app although you can restrict it's content.
To enable Restricted Mode open the app and select Settings on the left of the screen. Scroll across the settings and select to enable Restricted Mode.
All the best
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