https://www.theguardian.com/technology/2018/may/31/twitter-blocking-users-who-were-underage-when-they-signed-up > Tech firm acts on accounts created by users under 13 at the time to comply with GDPR > In an effort to comply with GDPR, Twitter is blocking users who were underage when they signed up for the service – even if they’re now well over 18.