Today I was trying to setup a 3 pack of Deco AC1900 S4, to expand my wifi home network.

A fallowed the proceess:

1. Install DECO app
2. Disconnect power of wifi modem
3. Plug ethernet cable to modem and to device
4. Plug back power adapter to wifi modem.

IN the APP:

DECO app detect my device, at the end DECO app prompted says to assign SSID and password.

Then,  I go to more and chage from router to access point, here I was hopping to select my wifi network and set my password.

But there isn't an option to do this.

Can someone help me out?