According to Facebook and Instagram, there’s a hazy filter on this report. The San Francisco company AppData reports that the photo-sharing platform has lost 25 percent of its daily active users in the past few weeks, following a backlash over changes to its privacy policy. Facebook, the platform’s owner, is disputing the accuracy of the report. AppData says the numbers do not reflect whether changes to the terms of service are to blame. Instagram’s co-founder Kevin Systrom attempted to clarify the new policy a week ago, reassuring users that their photos would not be used as ads.