Auto update cart for WooCommerce

Good day,
I am having trouble enabling a cart system where when a customer changes their quantity for a item they want it does it automatically. For now it works but the customer needs to click a button to update the cart and that to me is a inconvenience.

Is there any free way to enable the cart to auto update as soon as the quantity in the cart has changed rather than using the button.

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