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Hi Ben,
May I know what error you are receiving when accessing the URL mentioned in the Excel workbook?
The upload file should appear under Document>Apps>Microsoft Forms>Form name>Question folder. I understand the uploaded file location does not seem right in Excel workbook, in form Responses tab, click the question (in your case Receipt), click More Details, as shown below.
In the prompt window, click the attached image under Responses, check if the image opens now.
Besides, may I know how you created the form, what was the starting point? Also, you are using your work or school account to create the form, right?
Regards,
Neha