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# Auto-block checkout with free products


### Overview

We've noticed a sneaky bot causing trouble for our customers by placing orders with free products  and matching first and last names or different first and last name.

To tackle this, we've rolled out a new function on Shopify. It stops creating orders with **a subtotal of 0** and when **the last name is the same as the first name or the last name is different thẻ first name**.

### How to use:
1. Auto-block creating orders with a subtotal of 0 and matching last name with first name
Step 1: Turn on the Blockify checkout rule. Please review [this guideline](https://docs.ipblocker.io/getting-started/block-checkout) to learn how to enable it. If you've already enabled it, you can skip this step.

Step 2: Tick the box 'Auto-block creating orders with a subtotal of 0 and matching last name with first name.' 

![](https://storage.crisp.chat/users/helpdesk/website/-/8/3/8/3/8383e5404a31c000/20260416-110924_g3anf2.png)

Once you set up correctly, orders with a $0 subtotal and matching first and last names won't be able to go through. Instead, the checkout page will show a warning: "Order cannot be placed due to suspected fraud.

![](https://storage.crisp.chat/users/helpdesk/website/-/8/3/8/3/8383e5404a31c000/abd8832a-6acd-4eda-977e-5bd681_1jfwtg2.jpeg)

This function will block creating orders with a subtotal of $0, excluding additional fees such as shipping costs, taxes, etc.

Due to Shopify's regulations, third parties are not allowed to intervene in abandoned checkouts, so this feature cannot block abandoned checkouts.

2. Auto-block creating orders with a subtotal of 0 and different first and last name
Step 1: Turn on the Blockify checkout rule. Please review [this guideline](https://docs.ipblocker.io/getting-started/block-checkout) to learn how to enable it. If you've already enabled it, you can skip this step.

Step 2: Tick the box 'Auto-block creating orders with a subtotal of 0 and different first and last name' 

![](https://storage.crisp.chat/users/helpdesk/website/-/8/3/8/3/8383e5404a31c000/20260416-111450_171w370.png)

Once you set up correctly, orders with a $0 subtotal and matching first and last names won't be able to go through. Instead, the checkout page will show a warning: "Order cannot be placed due to suspected fraud.

![](https://storage.crisp.chat/users/helpdesk/website/-/8/3/8/3/8383e5404a31c000/image_182q0oz.png)
This function will block creating orders with a subtotal of $0, excluding additional fees such as shipping costs, taxes, etc.

Due to Shopify's regulations, third parties are not allowed to intervene in abandoned checkouts, so this feature cannot block abandoned checkouts.