PayPal IPN不重定向

Question

我的贝宝IPN没有将我重定向到(dynamic link website)/client_area?paypal_payment_succes=1。

注意：：我制作了自己的脚本，该脚本是公开的，因此用户拥有更多链接，而不是一个网站在使用它。

贝宝格式的代码：

/*PAYPAL ADDON*/
                if(addon_activated('PayPal_Gateway') == "YES" && $payment_option == "paypal")
                { include_once('content/addons/PayPal_Gateway/core_config.php');
                    ?> 
                <form action="<?php echo $paypal_url; ?>" method="post">
                      <input type="hidden" name="business" value="<?php echo $paypal_seller; ?>">

                      <input type="hidden" name="cmd" value="_xclick">

                      <!-- Specify product details -->
                      <input type="hidden" name="item_name" value="Items in cart - <?php echo $_SESSION['user_username']; ?>">
                      <input type="hidden" name="item_number" value="OLP-00001">
                      <input type="hidden" name="amount" value="<?php echo $_SESSION['total_checkout']; ?>">
                      <input type="hidden" name="quantity" value="1">
                      <input type="hidden" name="currency_code" value="<?php echo $current_currency;?>">

                      <input type="hidden" name="no_shipping" value="1">
                      <input type="hidden" name="shipping" value="0.00">
                      <input type="hidden" name="tax" value="0.00">
                      <input type="hidden" name="button_subtype" value="services">
                      <input type="hidden" name="no_note" value="0">

                      <!-- Return URLs -->
                      <input type='hidden' name='cancel_return' value='<? echo $payment_return_success; ?>'>
                      <input type='hidden' name='return' value='<? echo $payment_return_cancel; ?>'>

                      <!-- IPN Url -->
                      <input type='hidden' name='notify_url' value='content/addons/PayPal_Gateway/paypal_ipn.php'>
                    <center><h1><i class="fab fa-paypal" style="color: green;"></i><br><font color="grey">Pay with PayPal.</font><br></h1><br>

                    <button class="btn btn-success" type="submit"><i class="fab fa-paypal"><b style="font-family: Muli, sans-serif;"> Pay with PayPal (-<?php echo $_SESSION['total_checkout']." ".$current_currency;?>)</b></i></button></center>
                </form><?php
                }
                /*PAYPAL ADDON*/

谢谢。