Untranslated word “Shipping” in cart and checkout page

Please post the url to your site.

That text “Shipping” is the “shipping package name”. I don’t think you can change it in settings.

You can change it using this snippet:

add_filter( 'woocommerce_shipping_package_name', 'custom_shipping_package_name' );
function custom_shipping_package_name() {
  return 'Ukrainian translation for shipping goes here';
} // end function

Just to test, does it work if you use an English word, say “Delivery”?

Um. Just copied the code from here and it still works for me. Using Storefront 2.3.3 as you are. What if you temporarily disable your payment gateways, use COD and test.

Where did you put the code?

So – it works fine with plugins deactivated, no spinner? Reactivate plugins one-by-one and check. Can you identify which plugin is breaking it?

Alternatively, I have some custom css to try:

#order_review .shipping th {
  color: #f8f8f8;
}
#order_review .shipping th:before {
  content: "Delivery";
  color: #6d6d6d;
}