Hi,
When I click on "Kurv" on your website, I do get the cart page :
monosnap.com/file/YCxC0uI5VTK4HLGdBZWHNb5g7vxqHS
That's because I already have a cart.
However, if I click on that link before having anything in the cart, I get redirected to the listing of products with a message that the cart is empty:
monosnap.com/file/s0gUWjgXMpQweZ3ok80tjyDR7a89p5
So it's working fine, as far as I can see.
Now, if you want to redirect elsewhere when the cart is empty, you can enter the URL in the "URL where you will be redirected when the cart is empty" setting of the HikaShop configuration.