Hello Mohamed,
We have determined that the issue you are experiencing is being controlled by WooCommerce and our theme does not have any influence on it. We suggest that you attempt to use the WooCommerce options to resolve the issue. Alternatively, you may contact the support team of the snippets plugin you have used on your site.
Additionally, you may try a third-party plugin that better meets your requirements, but please note that this is done at your own risk.
You can try with this free official WooCommerce extension as well: https://woocommerce.com/woocommerce-shipping/
Best Regards,
8Theme’s Team