Make sure that your widgets are active, running and have collected at least one email before exporting.
Also, make sure that you're using Microsoft Excel, Google Sheet or another spreadsheet application when opening the exported file.
If you're still getting a blank document, please contact our support by submitting a ticket here and we will get back to you as soon as we can.
How do I export the emails collected?
How do I open the emails collected?
Can I export the email without using integrations?