Hi Vanessa,
Yes, that is possible, however, it depends on which invoicing plugin you are using. Currently, our plugin only supports Print Invoice & Delivery Notes for WooCommerce. If that’s it – you need to enable “Show EAN” and/or “Show barcode” checkboxes in (‘WooCommerce > Settings > EAN > “Print Invoice & Delivery Notes for WooCommerce” Plugin Options’). If you are using some other plugin for invoicing – please let me know which one, and I’ll make our plugin compatible with it. If you wish, you can contact me directly via [email protected].
Hope that helps. Please let me know if you have any questions.