The message you get on the page when you try to see a invoice is:
Template not found! Check if the following file exists:
wp-content/plugins/woocommerce-pdf-invoices-packing-slips/templates/pdf/stock/invoice.php
with the directory “stock” being the custom template folder I made.
Edit: Nevermind figure out you needed to copy to your own folder inside your own child themes folder not the plugin folder.
