Why is Orbi blocking websites?
Some Orbi routers have a pre-installed security system that blocks access to unsafe sites. It's called Netgear Armour and it may be automatically enabled on your router. The problem is, it may block access to perfectly safe sites, but you can quickly fix that by disabling the feature from your Orbi admin panel. Disabling it shouldn't pose security threats as long as you use antivirus on your devices.