Availability Alerts for Exposure Notification

I have been able to open and enable this app by selecting my 'Active Region'.

The last step, where I could toggle Availability Alerts is greyed out, and it says: Availability Alerts are not available because Location Services is turned off in Settings.

I have scoured Location Services, and dont see the Exposure Notification app, or anything else that might help me fix this.

How can I fully enable?