Here's  my setup:
ZTE UniFi Modem --> Deco x20 (primary) --> Deco x20 (room 2) --> Deco x20 (room 3) --> TV, Mobile, Labtops.

- ZTE UniFi Modem to Deco x20 (primary) connects on port 1.

- Deco x20 (primary) to Deco x20 (room 2) / Deco x20 (room 3) connects via wireless.

I am attempting to utilise my labtops by connecting it to the Deco x20 (primary) on port 2 using an Ethernet CAT 5e cable. However, the message "Not Connected" is displayed.

Additionally, I attempted to establish a connection to the Deco x20 (rooms 2 and 3) via Ethernet CAT 5e cable, with port 1 or port 2. The status indicator indicated "Connected."

Does anyone have experience with a comparable issue and have a solution to provide advice on how to resolve the Deco x20 (primary) port 2 being able to connected via laptops?