Model :

Hardware Version : Not Clear

Firmware Version :

ISP :

Hi everyone,
i just opened my brand new Archer D9 yesterday and i've been trying all day to solve this problem i'm having.
Basically everything is set up great, ADSL is working ok, other options i left to default and I was considering checking them at a later date.
If it wasn't for the wifi not working properly.
Both of my wifi now have broadcasted SSIDs and have a password.
I have an Xbox One that has built in AC wifi and the console didn't have problem to find my 5Ghz WIFI SSID and connected properly.
Any other devices i own that only push to wifi n at max aren't able to find my 2,4Ghz SSID and this basically prevents me to connect my pc and smartphone to the internet.
Just to be clear, both my 2,4Ghz and 5Ghz wifi have THE SAME settings; absolutely nothing is different between them.
Both wifi leds on the router are still and on, so no problem there.
I really can't find the cause of the issue and it's driving me crazy.
Hope you can help me in some way.
Thanks.