# All data/participants deleted

**URL:** <https://forum.avicennaresearch.com/t/all-data-participants-deleted/321>\
**Category:** Support\
**Created:** [April 28, 2021, 12:19pm UTC](https://forum.avicennaresearch.com/t/all-data-participants-deleted/321 "2021-04-28T12:19:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![niklas.schmitt94](https://forum.avicennaresearch.com/letter_avatar_proxy/v4/letter/n/8e7dd6/32.png) [@niklas.schmitt94](https://forum.avicennaresearch.com/u/niklas.schmitt94)\
**Post date:** [April 28, 2021, 12:19pm UTC](https://forum.avicennaresearch.com/t/all-data-participants-deleted/321/1 "2021-04-28T12:19:29Z")

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Hey,

today I looked into my survey no. 12058 and saw that all my participants and their data are deleted (except for one who registered today). How can that happen, and how can I retrieve their data??

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**Author:** ![m.hashemian](https://forum.avicennaresearch.com/letter_avatar_proxy/v4/letter/m/a5b964/32.png) [@m.hashemian](https://forum.avicennaresearch.com/u/m.hashemian)\
**Post date:** [April 30, 2021, 10:32am UTC](https://forum.avicennaresearch.com/t/all-data-participants-deleted/321/2 "2021-04-30T10:32:56Z")

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Hi @niklas.schmitt94

You have emailed my colleagues about this as well. Let’s continue this over the email.

Thanks