I signed into manager.paypal.com with the same credentials, but can't seem to successfully connect with curl. (https://developer.paypal.com/docs/classic/payflow/gs_payflow/).
curl -s https://pilot-payflowpro.paypal.com -d 'ACCT=5105105105105100&
AMT=1.00&EXPDATE=1216&TENDER=C&TRXTYPE=S&
PARTNER=PayPal&
PWD=***********&
USER=********&
VENDOR=*********'
However I get back an error.
RESULT=1&RESPMSG=User authentication failed
The only issue I can think of is that the password includes encoded characters (an exclamation point) but I'm using Ruby to parameterize the curl shell command so it should be encoded properly.
Yeah , sometimes its related to the special character in the password . You can try to change your password to the new one with only characters and numbers and retry again .
And one more thing you can check in your manager account under "Account Administration" that you have not specified any IP address for "Allowed IP Addresses (For API Transaction Processing)" . If you have specified any IP address there make sure your server IP initiating the API call is listed there .