Google OAuth - People API

I'm getting this error in Google OAuth in CB Connect, prob a new thing Google want. But when I publish the API then I get about 25 authentication emails from Google, I don't get it. 
Am I missing something?
"Failed API request people.googleapis.com/v1/people/me . Error: People API has not been used in project [project number] before or it is disabled. Enable it by visiting console.developers.google.com/apis/api/people.googleapis.com/overview?project= [project number] then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.