I've decided to buy the Netgear WiFi Range Extender AC 1200 and setup seems quite straight forward. But I have a problem. I followed setup instructions according to https://www.youtube.com/watch?v=qWbOygUGE_0. Everything works fine up to 2:38. When I click on Netgear connection, my standard connection turns off and it says, you have to connect to the internet first.

Can somebody please help me. Many thanks.