I am trying to have PayPal process an order using checkout rest api. using c#. I have an order which shows on PayPal checkout page. Neither PP or CC finish processing. PP loops back from review order to Order Page, CC hangs up. My Order is {"intent":"CAPTURE","payer":{"email":"[email protected]"},"purchase_units":[{"reference_id":"A-ISU-20231017-125939-0-130-0","description":"ISU Mystery Song-Est.Taxes & Fees Included","amount":{"currency_code":"USD","value":"1.00"},"payee":{"email":"[email protected]"}}],"payment_source":{"paypal":{"email_address":"[email protected]"},"experience_content":{"payment_method_preference":"IMMEDIATE_PAYMENT_REQUIRED","brand_name":"ISU","locale":"en-US","landing_page":"LOGIN","user_action":"PAY_NOW","return_url":"http://localhost:50838/Account/isu-review-thanks.aspx","cancel_url":"http://localhost:50838/Account/isu-review-cancel.aspx"}}} I am using client.UploadString(paypal_path2, "POST", orderJson); and I can see the data from client.DownloadString(paypal_path2);. Any ideas? Thank you in advanced.

谁像人民党一样处理命令,回到我的谢意或取消页。