Educara SURVEY

hi

i am thinking about usind educara survey for my surveys. unfortunately i could not find any documentation - can you help me (is there a link to the documentation?).

at the moment i have some questions concerning the survey process:
- is it possible to guarantee that each user only fills in the questionnaire once?
- is there a real time reporting (which shows me how many users have already filled-in/opened/not finished the questionnaire)?

thanks in advance