Each time you make any changes to the product or store data on your WP Maps account, you will need to refresh the build (that uses that data) by pressing the "Update" button on the build.
This will make the changes take place on your locator widget.
Click on the Update Button to Refresh the Build
The update is done to serve the new version of the build with changes and avoid the cache. You can also do it without updating the build by increasing the number from the "tlog" variable in the generated script.
Figure 2: Refresh Build Confirmation