If the 5G radios LED light is green means there are devices connected using this signal type, however when is orange just means that there are not clients connected, but is being broadcasted, by default the SSID/Wi-Fi ID will broadcast both radios, and your devices will choose what signal they prefer to use, also you can check what signal you devices are using in the clients session and confirm if your SSID/Wi-Fi ID have enabled both radios as well, now if your issue is different please describe.
1:Checking Access Points light:
R510 LED lights
2:Confirm what radio the clients are using
expand the Clients section on the Dashboard>move the bar to the left >Radio Band
3:Check the radio set up for the SSID/Wi-Fi ID
wireless network>choose the SSID> Edit > Advanced Options > Radio Control tab
Technical Support Engineer | L2 TAC Wired | Lennar Home Community