Why isn't my cart updating after product selection?

[webdeveloperssp]

Hello 

I have one problem on my site.

The issue is when I select any type of color and size of product and goes for add to cart it does not show anything but after I came back and refresh the product page. The product shows in cart.
Can anyone tell me what is the issue?
- https://klwhcrsffcomn64m-65851359471.shopifypreview.com

Above link is preview link.

[Greg_P · Accepted solution]

Hello,

try to change method attribute to "GET" for form on product page.