my 5g wifi is not working it was fine last night but its not working now.

i did everything I rebooted the device,

I changed the channels and channel width,

turn on/off the smart connection and then, turn 5g off/on again, but nothing seems to be working I've only had the ax72 Pro less than 2 months and it's causing me problems.

All the lights on the device are on and green. When I look at the Tp-Link app and the web interface to change the settings, it shows that 5ghz is on but on my devices on the wifi settings, the 5ghz is not showing. its says that the ax72 pro is up to date on the firmware.