no problem, very nice work on your site btw.
Now don't lose interest . . . :)
how can I move that hack to my plugin and call it during this checkout process?
I tried this in my plugin which uses the same action as the code in class-wc-checkout
but that doesn't do it.
add_action( 'woocommerce_checkout_update_user_meta', 'nfp_add_meta_webcode');
function nfp_add_meta_webcode() {
$unique_code = $_SESSION['clientwebcode'];
update_post_meta( $order_id, '_webcode', $unique_code) ;
}