Availability Alerts are not available because Location Services is turned off in Setting

On the Exposure Notifications setting, there is a toggle switch for Availability Alerts, however, this is greyed out and a message underneath reads “Availability Alerts are not available because Location Services is turned off in Setting”. Location services are turned on, however, I have restricted some apps and functions. Even turning on all system related location services (time zone, location based ads etc), the switch remains greyed.

Google search for the specific message produces nothing of value.

Anyone have thoughts on the specific location services to turn on?

IOS 13.5 and IOS 13.7