So about 2 weeks ago our internet stopped working for the majority of sites on all our devices. PS4 no longer connects at all. Phones will connect but can't display most web pages, however some apps work like Facebook. Laptops can connect, can get on to the odd sites. If we try a speed test or to go into any page we can't access it will say it can't connect to server. On a house mates computer it mentions it can't locate DNS. Our landlord is trying to sort it but shock and horror, BT aren't exactly helpful! Any help would be appreciated! BT HH5 light is blue.