...
Review your Exposure logs in the Settings section of your phone. (Instructions)
iOS: Settings → Exposure Notifications → Exposure Logging Status → Exposure Checks
Ensure files are being pulled down.
Android: → Settings → Exposure Notifications → Exposure Checks
If you are not seeing logs on your phone, please check with your Devops or with Apple and /or Google that your Public Key and configuration is accurate.
Activating Proximity Tracing on iOS Devices
...