The UserReport online survey contains of a number of default questions that should be relevant for most website owners to get answers to. The default questions include usability questions (opinion questions about your website), demographic questions (personal questions about gender, age, income etc.) and the email signup question. These are mandatory and therefore unchangeable.
However, you are able to add as many additional questions to the survey as you like and you may also disable most of the default questions if you find them irrelevant. To edit or add questions to your survey, simply go to "settings" --> "survey" --> "edit survey questions". This opens the survey editor, where you can edit your online survey.
Learn how to add question to the survey here.