WooCommerce Orders page flooded with Failed orders sending it to many customers

Hi @rencley,

This is likely a conflict issue with your theme or another plugin, and the best way to determine what’s causing the issue is to temporarily switch your theme back to Storefront, disable all plugins except for WooCommerce, and place a test order.

If you don’t want to test on your live site, you can create a staging site using a plugin called WP Staging: WP Staging

You can find a more detailed explanation on how to do a conflict test here: https://docs.woocommerce.com/document/how-to-test-for-conflicts/