Step 1: Confirm your Location History had been opted-in
Go to Google Maps Timeline.
If you see red dots on the map (as below screenshot), you have enabled the History Location feature.
Please move to step 2.
If you don't see any red dot on the map, you probably need to enable the feature. Click the 'Gear Icon' on the bottom-right of screen. Then opt-in 'Enable Location History'. This will lead you into a concensus page. Enable this feature.
Since you just started collecting your location data, there is no data to match. Please come back another day to match again.
Step 2: Select period to download:
After clicking the Download button, you shall be able to see some files downloaded. Please move forward to Step 3.