I ran into several issues when I tried to send a reminder to "Unfinished Respondents" :
- Many participants who have completed the survey were contacted. Among them, some clicked on the link and got the message : You have completed the survey already. Other participants (about 10 of them) were able to complete the survey again, when they are not supposed to.
- Some participants who received the initial invitation never received the reminder.
I would like to understand what happened there and how to prevent this issue in the future. Also, how can I delete the data of the participants who were able to complete the survey twice ?
Thank you !
Best answer by Kate
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