@denisse_delgado_1, if you have an email id variable in your survey, you could avoid receiving duplicate entries using our dynamic data attachment feature. This post discussed previously should help you solve this issue:
If you wish for an easier option, you could also try providing the respondents a secret code (captured within the survey question), which they must provide when submitting.
But let’s also see if we have a better option for this from our community.
