I finally found a solution for my problem with using the END-URL feature:
http://meineDomain/index.php?sid={SID}&lang={LANG}&token={TOKEN}&newtest=Y
With this URL as END-URL you can redirect to the same survey: SID - Survey ID, LANG - Language and TOKEN - The used token. Very important as well is "&newtest=Y" to avoid any "Session expired"-Problems.