Cart Block: checkout validator

The reviews are overwhelmingly positive, with many merchants praising the app for solving specific checkout and cart-blocking problems that other tools could not handle. Users frequently mention that it works well for use cases like restricting purchases by region, blocking zero-priced items, preventing bot activity, and stopping card-testing fraud. A major strength highlighted throughout the reviews is the support team: merchants repeatedly describe the support as fast, friendly, responsive, and willing to go above and beyond by joining calls, troubleshooting issues, and even releasing updates or custom workarounds to fit niche needs. Several reviewers also note that the app is easy to set up and flexible enough to handle complex or unusual store requirements. The negative feedback is limited but important. A small number of reviewers report that the app did not fully block orders as expected, with one saying it still lets orders come through. Another review is blank aside from a low rating, which suggests at least one dissatisfied user but provides no details. A few comments also imply that setup can be tricky in some cases and may require support assistance or checkout updates before the app works properly. Overall, the reviews suggest a highly effective app with exceptional customer support, but with occasional setup complexity and rare reliability concerns.