I've been using Norton ConnectSafe centrally at my ZTE home router (model ZXHN H108N V2.5) for the last few months, with the aim of protecting my children from accessing websites with inappropriate content.
Some two weeks ago I discovered that, although the settings (preferred and alternate DNS) still remain the same as initially set, the content filtering protection of ConnectSafe has stopped. Essentially, anyone connected to the internet through this router is allowed to access any kind of website.
I reported the problem to my ISP but they insisted that they had not interfered with the settings of my line whatsoever.
I would appreciate receiving any advice on correcting this malfunction.
Thank you in advance.
PS. Please refer to attachment showing screenshot from DNS settings for my router