OK, a follow up, after installing older releases of WooCommerce Square, and seeing no resolve, I decided to take a different route when I discovered that when my customer take the add item to cart then take the cart to checkout, everything worked as expected, so, since I pay for orders via Admin Screen and customers pay for order via email links - here is the snippet I added...
add_action('template_redirect', function () {
global $wp;
// Check for the WooCommerce order-pay URL structure
if (isset($wp->query_vars['order-pay']) && isset($_GET['pay_for_order']) && isset($_GET['key'])) {
$order_id = absint($wp->query_vars['order-pay']);
$order = wc_get_order($order_id);
// Proceed only if the order exists and is pending payment
if (!$order || !$order->has_status('pending')) {
return;
}
// Empty the current cart
WC()->cart->empty_cart();
// Add each product in the order back into the cart
foreach ($order->get_items() as $item) {
$product_id = $item->get_product_id();
$quantity = $item->get_quantity();
if ($product_id && $quantity > 0) {
WC()->cart->add_to_cart($product_id, $quantity);
}
}
// Redirect to the cart page with a reference to the original order
wp_safe_redirect(wc_get_cart_url() . '?from_order=' . $order_id);
exit;
}
});
