Just had BT Infinity 2 fibre installed. Speed is shocking (0.95 Mbps over Wi-Fi) but they say expect that in the first few days. However, the router directed me to an internal html help page that said if I have fibre to the home it should be connected to the red WAN port. My router connects to an Openreach socket via the grey DSL port. Is this wrong? I spent an hour on the line to BT trying to get them to understand the question, and the concept of a web page served from the router itself (they thought I was "using Google or a forum"). Giving up on them I rang the engineer who actually installed it (he'd rearranged the appointment so I had his number) and he said you only need to use the WAN socket if you have separate router and modem boxes, which I don't. Is this correct?
TIA for any help.