I got 3 deco M4 device, 1 as main (AP mode) and slave 1 and slave 2. Main deco and slave 1 are located at ground floor while slave 2 is located at floor 1. Main deco is located under the stair so the

am trying to connect Connecting AC1300 Deco M5 to a BTOpenreach Modem. but the Deco M5 unit is not connecting to the internet. it detects that the modem uses PPPoe and asks for a username and password