I am integrating PayPal PayFlow pro in Recurly payment gateway. I have created a PayPal Flow pro test account and got details about Vendor, User, Partner details and set those in Recurly add payment gateway for PayPal PayFlow Pro. Now Recurly is in sandbox mode. Every time I am trying to PayPal Payflow Pro Configuration Test, it is showing below error:
Invalid Payment Gateway Login. Recurly could not connect to your gateway with the credentials you provided. Please double check your payment gateway's login credentials and try again.