When the demo open’s of my product with Live Preview button (with i frame) Product not added in cart.
But when i direct added a link without any iframe it will works fine.
Here is the links with iframe with codecanyon : http://preview.codecanyon.net/item/woocommerce-variable-pricing-calculator-addons-simple-product/full_screen_preview/27169469?_ga=2.224863135.464498170.1601281797-513658973.1601123148
Direct link Demo: http://demo.motif-solution.com/woocommerce-variation-pricing-calculator/shop/
Thanks for help in advance