This article provides instructions on how to identify errors and re-upload your plan. 

If your upload fails to create or edit the campaigns, the status bar will turn red, and when you hover over the status, a small window will appear, giving you the option to explore the reasons for the failure.

When an additional pop-up appears, you can find the reason for the failure under Error Logs. There are some errors that can be corrected and you can re-upload the spreadsheet. 

If you cannot find the specific reason for the failure under the error logs, you can click on the "report error" button to reach out to the support team for assistance.

Looking for more help? Instructions to reach out to support are here.