Data problem for 5Ghz frequency

Hello,
I have a data problem for the 5Ghz bandwidth, while this frequency is activated.

How can I fix it?

Thank you for your help.


Capture d’écran 2022-09-16 231130.png

What exactly is the problem?

Screenshot says none of wireless clients are connected to 5GHz radio … and it does take some effort to configure MT AP so that wireless clients roam to 5GHz from 2.4GHz.