Do you use the Microsoft Forms to create the survey?
Thanks for visiting our forum. Our forum focuses Microsoft Teams, which is the hub for team collaboration in Office 365.
Based on your description, this problem is more related to Forms, which we do not support. It recommends you ask for help in Forms forum.
The following suggestion is just for your reference. Hope it will be helpful.
If you create a poll, it is anonymous. If you create a Form and add it as a tab in Microsoft Teams, the response will include the display name of user who fill out the form.
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