Known bugs Solutions to known issues and bugs can be found here. Delete cookies in different browsersWindows (Internet Explorer, Microsoft Edge, Firefox, Chrome and Opera) Mac OS X (Safari, Firefox, Chrome and Opera)iOS - iPhone/iPad (Safari and Chrome)Android- mobile phone and tablet (Built-in browser, Firefox and Chrome) Error messages"System error""An error has occurred""The service is currently not available""Warning: Your user account has been blocked" iOS (iPhone/iPad)Allow cookies in SafariUpdate iOS