@TP-Link Thank you. I am very much looking forward to getting it resolved.

@TP-Link Unfortunately the connection is not stable to last long enough for me to login and get the logs when I have both connected. It's quite frustrating.

@TP-Link I think this is like the 5th time I try to set it up, and always the same result. Yes, the second Deco is wirelessly connected to the main one. Ok, I will do that. Thanks for the help.

@TP-Link You're right. I disconnected the second Deco M5 because the connection is unstable otherwise. My internet provider is Comcast and modem is an Arris model is SB6183 and serial number is: 3949...

I bought two Deco M5. When I connect 1 of them as the main router, it works fine with no problem. But signal doesn't reach bedroom, hence I tried connecting the second one closer to the bedroom....