Apply Gift Card field not appearing (Blocks based Cart and Checkout)

Currently the PW Gift Cards plugin is not compatible with the Blocks based Cart and Checkout option. We are working on an integration with this but currently it requires using the classic Cart and Checkout pages.

To switch to the classic Cart and Checkout, follow these steps:

1. Edit the page
If using a block theme: Go to Appearance > Editor > Pages > Select Cart or Checkout > click the Edit icon.
If using a non-block theme: Go to Pages > All Pages, and then locate and edit the Cart/Checkout page.
2. Open the List View and select the Cart or Checkout block.
3. Click the “Transform” button, which is leftmost in the block toolbar
4. Choose “Classic Shortcode”.
5. The block will be transformed into a Classic Shortcode placeholder block.
6. Save your changes by clicking the Save button in the top bar.

For more details about this process, see the official WooCommerce Documentation:
https://woocommerce.com/document/woocommerce-store-editing/customizing-cart-and-checkout/#reverting-to-the-classic-cart-and-checkout