app-payments-piraeus.php.diff

diff --git a/app/payments/piraeus.php b/app/payments/piraeus.php
index 9de5aeb163..9d96d843dd 100644
--- a/app/payments/piraeus.php
+++ b/app/payments/piraeus.php
@@ -28,8 +28,8 @@ if (defined('PAYMENT_NOTIFICATION')) {
 
         $pp_response = [];
         $pp_response['transaction_id'] = $_REQUEST['TransactionId'];
-        $pp_response['transaction_datetime'] = $_REQUEST['TransactionDateTime'];
-        $pp_response['reason_text'] = $_REQUEST['ResponseDescription'];
+        $pp_response['transaction_datetime'] = empty($_REQUEST['TransactionDateTime']) ? '' : $_REQUEST['TransactionDateTime'];
+        $pp_response['reason_text'] = empty($_REQUEST['ResponseDescription']) ? '' : $_REQUEST['ResponseDescription'];
 
         if ($_REQUEST['ResultCode'] == 0) {
             if ( $_REQUEST['StatusFlag'] == 'Success' && in_array($_REQUEST['ResponseCode'], ['00', '08', '10', '11', '16'])) {

design-backend-templates-views-payments-components-cc_processors-piraeus.tpl.diff

diff --git a/design/backend/templates/views/payments/components/cc_processors/piraeus.tpl b/design/backend/templates/views/payments/components/cc_processors/piraeus.tpl
index 2ccbe97ce3..6a6f1c2f7b 100644
--- a/design/backend/templates/views/payments/components/cc_processors/piraeus.tpl
+++ b/design/backend/templates/views/payments/components/cc_processors/piraeus.tpl
@@ -10,7 +10,7 @@
 {assign var="backlink_url" value="payment_notification.cancel?payment=piraeus"|fn_url:"C":$protocol}
 
 {assign var="ip_address" value=$smarty.server.SERVER_ADDR}
-{assign var="response_method" value="POST"}
+{assign var="response_method" value="GET"}
 
 <p>{__("text_piraeus_notice", ["[website_url]" => $website_url, "[referrer_url]" => $referrer_url, "[success_url]" => $success_url, "[failure_url]" => $failure_url, "[backlink_url]" => $backlink_url, "[ip_address]" => $ip_address, "[response_method]" => $response_method])}</p>
 <hr>