Widerruf-Button makes EU withdrawal rights compliance simple for your Shopify store. Add a "Vertrag widerrufen" button or link to any page. No login required. Customers complete a multi-step form, confirm their withdrawal declaration (BGB § 356a), and instantly receive a PDF confirmation via email. They can even select individual products to revoke, rather than cancelling an entire order. You can view and search all withdrawal requests, filter by status, and track key metrics from your admin.