WooCommerce Logs
Check WooCommerce logs for any error messages related to Additional Custom Emails. These logs might provide clues about the issue. You can access them from WooCommerce > Status > Logs.
Email Delivery Issues
If emails aren’t reaching inboxes, it could be a server-side configuration problem. Check your email settings in WooCommerce and ensure they align with your email provider’s requirements.
Conditional Logic & Shortcodes
If you’re using conditional logic or shortcodes in your emails and facing issues, double-check the syntax and ensure everything is coded correctly. Refer to the plugin’s documentation for specific guidance on using these features.
If none of these steps resolve the issue, consider contacting the plugin developer for further assistance.