Translations:First login - your user preferences/5/en
From LimeSurvey Manual
Note: If your surveys are located at the URL http://example.com/surveys/, then an administrative user can access the login screen by adding admin/ to the URL to thus form http://example.com/surveys/admin/. If all you have is the URL to take the survey, say http://example.com/survey/index.php?sid=27352, then strip off the back end and add the admin/ trailer.