Why do the camera not work with deco m4?

I have a sagem modem and tried to connect deco e4 as an Ap point. It works but the Deco makes a new network with new ssid and code. I Can not set the sagem in bridgemode. Can,t the deco be om same ssi

I have installed e4 as a router in tre middle of the house in the Office room. It gives a speed of 65 mbps in the living room, and in the kitchen. the childrens room is next to the kitchen, and there