The Deco worked fine until I decided to install the 1 year free trial of Security+ or Homeshield, whatever it is branded.

BBC news and other links stopped working. I didn't notice any other issues. Errors included connection closed and certificate errors.

I connect via Vodafone UK broadband, and also via their phone network so I was able to isolate it to the Deco by switching off WiFi on my phone and the BBC sites became accessible.

I disabled the web protection, but it still didn't work. I then disabled all 3 systems, web protection, IoT and intrusion prevention. Access was then restored.

Previously I had an Asus router, and their system worked fine (was also free).

The web protection is useless to me if it causes web sites to reject my connection by its intrusive design.