The cross-site request forgery (CSRF) warning appears on payment pages when customers access them through POST requests.
This can occur when you use an HTML form to send customers to
https://payv2.multisafepay.com with a POST request.
https://api.multisafepay.comaccepts POST and GET requests
https://payv2.multisafepay.comonly accepts GET requests.
For support, email the Integration Team at [email protected]