@Anonymous User Welcome to the community. There's two sets of parental controls, one for NOWTV pass content and the other for broadband. Pop onto My Account > Parental Controls page
https://account.nowtv.com/parental-pin
just to make sure you've set the broadband controls to a suitable level and if they're definitely set and not working give the broadband team a call and they should be able to look into it. You can find the telephone number for the Broadband Team by going to your My Account > My Package page
https://account.nowtv.com/my-package
and click the Moving Home section.
NOW are looking for users to join their Customer Feedback Group and help improve the service. If you're interested read more here and sign up.