Show the discount banner
Enable the app embed so the banner and discounted prices appear on your store.
- Go to Online Store → Themes → Customize.
- Open Theme settings (or the left sidebar) and find App embeds.
- Enable DiscountApp / Discount Banner.
- Click Save.
The banner appears when customers have a discount (e.g. from ?discount=CODE in the URL).
Testing: To always see the app (skip the control group), add ?discount_app_force=1 to any store URL. That visit and the rest of the session will get the discount experience. Example: yourshop.com/?discount=CODE&discount_app_force=1