Hi Aidan,
To bulk delete your empty FAQs, what you can do is go to the “FAQs” tab, click the “Screen Options” tab at top right corner of your window and then choose 999 for the “Number of items per page” setting (that’s the maximum that WordPress allows). Then you can just click the select-all checkbox and choose “Move to Trash” from the “Bulk Actions” drop down selector.
For the FAQs uploading as empty, there could perhaps be an issue with the formatting of specific cells in your spreadsheet or something else that’s corrupt. The following is a link to a spreadsheet that you can use as a template for import:
https://www.etoilewebdesign.com/Screenshots/FAQ_Export.xls
Try using this as a template to build out your spreadsheet. If you’re still having trouble with importing after doing this, then try importing just the template file, as is, to see if that works.
Thank you