I have made a questionnaire, I have add one participant (myself), I have activated the survey, I have sent the invitation and I have also received an invitation email with the survey url and the token. I have tried with the automatic token and manually set token.
But when I open the survey (clicking the survey link in the email) and insert the token - and click to continue nothing happens.
What is behind of this mystery? I would be very happy for your help.