no safe guard

[#1]

since changing over to fibre, new router etc
my safegaurd is not working
try to amend it but keeps coming up,Sorry we have a problem and currently can't save your changes, please try again later
so i have no control over what pops up or appears when kids are on the computer.
lucky i sit over them
have rebooted router, reset, turned it off, took it for lunch and done the jig but still not working
tried ringing as theres no online chat availble, but waiting time is 30 minutes as usual
please help to sort this so i dont have to keep sitting on my kids shoulders

[#2]

chat probably isn't working because of an adblocker or noscript running in your computer

[#3]

thanks
am not computer savvy so still learning lol
i do use adblocker

[#4]

funny thing is that it worked with the old router
i havnt changed anything, just upgraded to fibre with new router
since then, its allowed all the things i dont want to access on the computers