Paylock – COD Discount Control

Paylock gives you control over discount codes used with Cash on Delivery orders. Block COD payments when customers apply specific discount codes at checkout to prevent misuse of influencer codes and promotional discounts. When a restricted discount is applied and a customer selects Cash on Delivery, Paylock automatically blocks checkout and displays a customizable message explaining why the discount isn't available for COD orders. You can apply rules instantly without editing your existing discounts, and enable or disable them anytime. The app works directly inside Shopify Checkout using Checkout Extensions, so there's no need to modify your theme code. Perfect for merchants who want to protect promotional discounts while maintaining control over their payment methods.