Aspect Notice: OpenCart does have a newer cloud-based ecommerce solution (similar to Shopify or BigCommerce). Therefore, you have got the option to pay for a regular rate and have very similar features as you'll with the local download. Here, you find a list of each of the Coupon codes present https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html