Great, just done that. For your awareness, the selection screen I get when turning on the TV is below.Install these both apps, launch current activity click on "Allow", click on "Start Floating Window",
Click on "Grant".
A popup box should appear on top left,
open kids profile.
note the text on the Popup box, post the text here.
and uninstall both apps.
text should be something like
The text in the pop-up box on this screen is:
Interestingly when I load into one of the child profiles there is no pop-up box, the child profiles seem quite locked down so very few of my apps are available i.e. no Kodi etc.
Thanks for your help