1. Add a checkout rule to your checkout

Go to your Shopify store settings and click Checkout

Scroll to the bottom of the Checkout settings and add a click Add rule

Select the cart-checkout-validator option.

Make sure that Allow all customers to complete checkout is checked.

Click Save

Click Turn on to activate the rule

The rule should look like this when active

2. Tag products

Tag all the products that require protection with ch-checkout-validator

Make sure to save your product!