You can watch the video tutorial, which provides a step-by-step guide through the process.
You can display gift card payments on your invoices by following the simple steps below:
Step 1: Open Simple Invoice from your Shopify store’s “Apps” section.
Step 2: Click on “Templates” in the Simple Invoice dashboard.
Step 3: Click on the ‘Options’ section, and click on the ‘Show Gift Card Transaction’ under the ‘Order Details’.
Step 4: Please click the “Save” button to confirm your changes.
Important Note: Since every store in Shopify stores this data differently, you may need to create a support ticket with an example order number from the Support section or by clicking here.