Google analytic module - demographic track does not work I am building a drupal 7 site, and using the Google analytics module. 

I installed it, and made the needed adjusments on my Google analytic account.

But, when I am on the Demographics tab on Google analytics, I can't see any data regarding the "overview", "Age" and "Gender". 
Note: "Track DoubleClick data" was always enabled.

In addition, I get the following message: 

Some data in this report may have been removed when a threshold was applied 


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How can I solve this issue?
You will have to enable Track DoubleClick data under the Search and Advertising tab in the GA module settings.  You should also make sure your privacy policy is up to date with the correct info found here.