FAP-241K-A Client Connectivity Issue with 5GHz and 6GHz Radio Deployed

Hi guys, 

I hope you’re well. 

I have deployed a single FAP-241K-A unit and have configured the AP profile for both 5GHz and 6GHz radios. All the APs I currently have deployed are running dual 5GHz radio with 2.4GHz set as dedicated monitor with WIDS profile configured and I do not have this issue. 

I have the same SSIDs manually set on both the 5GHz and 6GHz radio but doing this causes issues with clients being able to connect to the SSID. At first this worked and the client connected but now I am unable to connect and receive an ‘access denied’. 

All SSIDs are WPA3 SAE with a mix of both bridged and tunnelled. If I disable the 6GHz radio I can connect with no issues so I know that this is the root cause. The device I am testing with doesn’t support 6GHz, but what is the best practice with this radio when you have a mix of devices with some being able to support and others not. Do I create a dedicated 6GHz SSID or are there settings that I can configure so that devices can select the supported radio accordingly? 

Thanks, 
Dan.