This usually happens when you have edited your spreadsheet after you have integrated your form with Google Docs (Drive) and received submissions. Once you have received your first submission, a new spreadsheet is created in your Google Drive account with the name of your form. If you edit the spreadsheet, new entries will no longer be properly displayed in Google Docs.
To fix this, export your submissions in CSV, copy its content and paste it in new spreadsheet in Google Drive.
In the future, if you want to edit your spreadsheet, you’ll need to follow these steps:
1. First, change the names in the column header (label) and make a submission.
2. Reorder the columns as you want and submit the form again. This will prevent the integration from delivering submissions that are not properly displayed in your Google spreadsheet.
Related documentation and FAQ:
Google Docs (Google Drive) integration
Fixing CSV Export in Microsoft Excel
I cannot download CSV file on Safari. What to do?
The CSV file containing form submissions is not displayed on columns. Why?