This so called solution disables the restrictions, so can't be used. This applies to One plus phones at least.
My kids hate Safe kids just because this, this meanless floating shield icon is so annoying for them when gaming and watching tik-tok etcetera, so we don't use it even since we are paying customers.
We have the icon disabled as instructed in this thread, and is just able to track their position and activities at least, but we can't block anything.