Microsoft Edge on Android shows blocked sites on my son's phone

I've set up my son's laptop with Edge and have blocked sites such as Youtube via Family Safety. I can verify that on the laptop. 

On his Android phone, I have:

* Installed Family Safety and logged his account into it.
* Turned off batter optimisation for the app.
* Installed Edge, and logged him in with his account, the same account as on the laptop. 

However, it allows him to see Youtube.

When I check Family Safety online, I can see under Mobile that it sees the phone and is tracking the amount of screen time he is using. However, the Edge settings are not  being applied to Edge on the phone.

P.