Thanks for your reply. I just tried what you mentioned and it still does not work. :( I tried contacting the theme developer but they are of no help. All of the theme templates I own , I have tweaked, but this one is making me hit a brick wall. I have been working on this template for 10 days now, and have spent the last 3 on this shipping calculator. I know I am missing something... but where I can't figure it out.
I don't think this works in Shopify. The work-around is to:
(1) Price your shipping off a shipping account (carrier based shipping) and add a deflator %. This works 'just ok.'
(2) Hand-code all your shipping rates per region and distance and speed and weight. We have global shipping, and know how tricky it can be.
We use a 3rd party warehouse that has tiered pricing and just enter those in at cost.
It took me awhile to get this working too. That's why my post above mentions reading the documentation very carefully. I thought I had done everything right, but then realized I missed something. It took me a few days and multiple reads.
If it's still not working, there may be a conflict with your theme or a JS error. Use your browsers dev tools to see if there is a JS error.