5Ghz SSID not showing on TP-Link Archer C7 v4

[ahmadka]

Hi guys ... I just purchased a TP-Link Archer C7 (hardware version 4) for my home networking. Everything is fine except that the 5Ghz SSID is not showing up on any of my devices.

I tried updating the router to the latest TP-Link firmware for it: 1.0.7 Build 20180425 rel.62587(4555) ... But still the problem remains.

What do I do ?

 

[degrub]

start with a hard factory reset and manually reconfigure.