Where can I change the footer text?
If you're using www.soscisurvey.de, the server will add a fixed footer. However, it should appear in German or English, depending on the interview language. What would you like to change?
Where can I change the sender's mail adress?
In the Project Settings in the "Authorize" tab, you can select between the email addresses of all acounts that (a) have access to your project and (b) have the mailing authorization.