Hosted Payment API response is HTML instead of XML

Discussion created by richbrim on Jun 17, 2020
Latest reply on Jun 18, 2020 by richbrim

I am following the steps found at GitHub - ElementPS/HostedPayments.CSharp  to perform a transaction. When I send request to Express API, I receive a status 200 ok, but the response is HTML instead of XML.What am I doing wrong?