You can disable the Anonymous Link by enabling By Invitation Only in the Survey Options. This can be useful if you distributed your survey through the Anonymous Link and would now only like to use Individual Links instead.



Refer below also



https://www.qualtrics.com/support/survey-platform/distributions-module/web-distribution/anonymous-link/

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I would agree with @bansalpeeyush29. But I also wanted to add:



If you need the anonymous link to still function, you may also want to consider copy+pasting your whole project, and opening a new anonymous link on the new project. You can always combine your data sets after the fact if needed! Because the variable names will be the same, you can easily Import responses into one of the Quatlrics Surveys, combine in SPSS, or copy and paste in Excel with ease.



For your new survey, explore the Survey Options tab to review ways to protect your survey to prevent this from happening again. Not all of these options will necessarily be helpful, but enacting as many as is reasonable will assist you:

!

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Thank you all. Unfortunately, we had QR codes and links mailed out to participants, so we have to keep the survey open. Due to our sample population, passwords, e-mail distributions, and other usual methods of protecting the survey are hard to use.

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