Hi
I set up BT access control so my son can't play online games (PS4) after 9 at night. It sets up ok, but then the next day it just dissapears and have to set it up again. Same thing happens with mobile phones and tablets, the rules appear then disappear. Used to be in place all the time but recently having this problem. Any help would be appreciated.
It is not hard to overcome the access controls. An Internet search will show how to do it. I suspect the same as John that your son will be overcoming them.
You might want to consider BT's Parental Controls which are Network based and can not be easily overcome. They do require bit of thought when you are setting them up but it may be the answer.