Samsung S21 Ultra 5G not connecting to 5Ghz wifi channel

[hugga12]

Hi folks .

I have a Samsung s21 ultra 5g. 

I can connect to the 2.4ghz WiFi but more than often I can't seem to connect to the 5ghz wifi channels .I'll have my laptop right infront of me onnected to the 5ghz wifi channel , yet my phone won't be able to the same. 

My router is netgear nighthawk r8000p

My phone software os 12.0.

Please advice .

I'm going insane 

[Ventor]

@hugga12 hello, in the settings of your phone / Connections / Wifi / settings of your network put:
IP-DHCP Settings
Phone MAC-MAC address type
Please check again.