The SuperMemo Classic application is no longer supported, and due to the shutdown of the supermemo.net platform on 28.06.2019 the synchronization will no longer work.
If you are a new user, download the new SuperMemo application: https://itunes.apple.com/us/app/supermemo.com/id982498980
If you are already using the SuperMemo Classic application, check how to transfer your progress to the SuperMemo application free of charge: https://www.supermemo.com/blog/supermemonet-service-closing.
If you have purchased a course dedicated to this application, which you have not yet activated, please contact us: [email protected].