I just tested this on your site and I see the problem is it mentions there are no shipping methods available. I tried with a Buenos Aires address and zip code.
Can you please share some screenshots to help us investigate this further? You can use https://snipboard.io to share screenshots here.
We need screenshots of: WooCommerce → Settings → Shipping WooCommerce → Settings → Shipping → Click on Edit on a Shipping Zone WooCommerce → Settings → Shipping → Click on Edit on a Shipping Zone → Click on Edit on each shipping method so we can check the specific settings.
Thanks for sharing those screenshots. It looks like you’ve done everything correctly.
However, from what I can see, you’ve limited your shipping zone using ZIP/postcodes. I’ve tried it, but I can’t access all the shipping methods using a postcode like 1599. This might be due to an incorrect address. Could you provide an example address for testing? Please ensure that the address falls within your shipping zone area.
We haven’t heard from you in a while; this is to check if you’ve been able to proceed with the troubleshooting steps provided before and if you still need help.