Overview of the Lunalytics Module
When I view the "Search Keyphrases" section of Lunalytics, why is there no data populating?
Google no longer provides data on search keyphrases anymore due to privacy reasons. If people aren't finding your site on other search engines and clicking through, then there wouldn't be any search keyphrases that the Lunalytics system would be able to report.
Put simply, most, if not all, of your site visitors are likely coming from Google, but Google no longer provides the data needed to populate that section of Lunalytics.