A. 1. Check app permissions: Go to Settings > Apps > NuMi > Permissions and ensure that all necessary permissions are granted for syncing with Fitbit. 2. Reconnect Fitbit: In the NuMi app, go to settings and disconnect your Fitbit account, then reconnect it to refresh the sync.

B. 3. Update both apps: Ensure both NuMi and Fitbit apps are updated to the latest versions to avoid compatibility issues.