Hi there, I just bought a Archer AX73 model. I try to set it up but the 5GHZ network is not visible. 

I did factory reset and reset the router. (On my wifi list only the 2.4GHZ channel is visible as a default, without any setup or modem connection)

I tried to setup the router with my phone, with my laptop, via ethernet cable, nothing helped. Read forums, watched videos, tried as much as I can but the 5GHZ is not vissible. It's visible only on guest network, but not working, nothing to show. 

Could somebody give me ideas or contact me what I can to do? 

Screenshot attached. 

Ps.: my devices are Ipone8, iphone11, apple macbook pro 2019, android phone, tizen tv