To modify the theme, you have to open the customize page. If you don't know how to do that, please refer to here.
A shipping rates calculator on your cart page that lets customers estimate their shipping costs before they proceed to the checkout page. To edit the shipping rates calculator, in Customize page, click Theme Settings > Shipping Rates Calculator.
You can configure the following settings:
- Show the shipping calculator : set this to Yes to display the shipping rates calculator on your cart page, or No to hide it.
- Heading text : enter the text that will be displayed above your shipping rates calculator.
- Default country selection : choose which country will be selected by default.
- Submit button label : enter the text that will be shown on the submit button.
- Submit button label when calculating : enter the text that will be shown when shipping price is being calculated.