Are you writing a custom snippet which makes changes to the order totals based on the billing county / state?
Perhaps your snippet adds a fee to the order depending on the billing state / county but the totals are not refreshed in the “Your order” section of the checkout.
This snippet will update the checkout totals when the billing state / county is selected on the checkout.
/**
* Snippet Name: WooCommerce Update Checkout Totals On Billing Sate / County Change
* Snippet Author: ecommercehints.com
*/
add_action( 'wp_footer', 'ecommercehints_update_checkout_totals' );
function ecommercehints_update_checkout_totals() { ?>
<script>
jQuery( function( $ ) {
$( 'form.checkout' ).on( 'change', 'select[name^="billing_state"]', function() {
$( 'body' ).trigger( 'update_checkout' );
});
});
</script>
<?php }
