Prices doesnt get updated

Love the way the plugin looks and neatly sits at thec checkout page.
My main problem is, it doesnt update the prices when the quantity is reduced.
Very sad to see customers trying to do this and leaving.

Is there a way to fix this.

FYI – I have tweaked the cart page so the user directly lands on checkout
Also I have remove cart fragments enabled on pages but have it disabled for cart and checkout.
Any help would be greatly appreciated.

I have it currently disabled but here is the link
https://feetninja.com

The page I need help with: [log in to see the link]