Shipping charging double

-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.5

Hi friends, I'm running into a big problem with a client's website. When some items are added to the cart, shipping is charged double. For example, when you add these items to the cart:

www.tekneticsdirect.com/products/metal-detectors/minuteman
www.tekneticsdirect.com/accessories/digger

Shipping costs should be a flat fee of $12.95, but it's charging 25.90. I only have one shipping profile set up (attached.) Any help would be greatly appreciated.

Hello,

Can you also show us some screenshots of how your configured your products ? Thank you.

Hi there, please see the screenshots below. Many thanks for your help!

Hi,

I would recommend to add back the "shipping" view in the "checkout workflow" setting of the HikaShop configuration.
Otherwise, shipping fees might be incorrect and no shipping fee will be displayed if the address of the customer is not in the USA but the customer will still be able to place the order.

Now I don't see why the shipping would double. I would recommend updating. If it's a bug that would probably help.