michelcheret on "WooCommerce Duplicate Cookies are created with"

Hi,
I have a problem with duplicate cookies created in Woocommerce.
It's on the checkout page, when someone wants to select an option for delivery, they can select pick-up or delivery. When they click one of the 2, it jumps back to the other value. We already tued off caching for this website. I'm running WC 2.5.5.
This is the screenshot