Redirect Not working

Hi

I am struggling to get the ‘Add to Cart’ button is not redirecting to the checkout page.
I am using the Divi theme (4.6.2) hosted on a Godaddy Managed WordPress Servers.

The Solutions that I have already have tried are the following plugins and code snipets:
– Direct Checkout for WooCommerce (Plugin)
– Direct checkout, WooCommerce Single page checkout , WooCommerce One page checkout (Plugin)
– Woocommerce Add-to-Cart Custom Redirect (Plugin)

Then I also tried this code snippet but also didn’t work that was added to the child the functions.php file:

add_filter('add_to_cart_redirect', 'lw_add_to_cart_redirect');
function lw_add_to_cart_redirect() {
 global $woocommerce;
 $lw_redirect_checkout = $woocommerce->cart->get_checkout_url();
 return $lw_redirect_checkout;
}

I have tried this by disabling the AJAX in the Woo-Commerce Settings but that didn’t help either.

The only way I got it to work is by opening the page in a incognito tab (Chrome) but only worked once.

Any assistance will be greatly appreciated.

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