Hi Andy,
Thanks so much for reaching out!
This column will show as 0 until an order is marked as Complete. You can do so manually in WooCommerce < Orders. You can also have orders automatically marked as Complete so that they will automatically be counted in the sales.
Just to clarify, which page are you looking to add the orders marked as processing and pending to?
If this functionality is a requirement for your intended project, I’d suggest that a third-party developer would be the best way to make this feature happen on a short timeline. ? We maintain a list of developers who work with our plugins on our Knowledgebase here:
https://theeventscalendar.com/knowledgebase/find-a-customizer/
Let me know if you have any other questions on this topic!
Thanks,
Jaime