Dear Yvonne,
Thanks for your updates and letting us know the current situation in your environment.
I think that it may be a feature related issue in your tenant and the next step is to contact the related team to help you fix the issue directly in your environment.
If you aren't the administrator, I suggest you contact the administrator in your company and let him follow the steps in Get support - Microsoft 365 admin | Microsoft Learn to open a support ticket to our related team as soon as possible.
About admin roles in the Microsoft 365 admin center - Microsoft 365 admin | Microsoft Learn
How do I find my Microsoft 365 admin? - Microsoft Support
The administrator should be able to open the support ticket from Help & support in the Microsoft 365 admin center.
Then you can select the Phone support or the Email support as follows.
To simplify the process, I'd like to summarize the issue as follows.
Issue Symptom:
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The external users can't see the filled response after they logged into Microsoft Forms.
Issue Environment:
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Microsoft Forms
Can we reproduce the issue?
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No
Next Step:
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Open a support ticket to our related team to fix the issue.
Thanks for your effort and hope that the issue can be soon fixed by our related team.
Sincerely
Cliff | Microsoft Community Moderator
