[Plugin: WooCommerce – APG Weight /Country Shipping] Message not showing up

Hi!

I installed this plugin so that I could set until 2kg maximum and after that, if the costumer has in the cart more than 2kg, he should contact me.
For that, I would need a costumized message to show up when that happens.

I already ready in some threads that we should go to cart-shipping-php and change the costumized message, however when it has more than 2kg, it doesn’t show up a default message from woocommerce. It only keeps the “Please fill in your details to see available shipping methods.” in the right side, where the payments appear. So I think it’s not totally working?

The theme I’m using is storefront.

Thanks!!