Below you will find a list of items to double-check to make sure that your configuration inside of Payflow is set up correctly.
Ensure Hosted Pages is Set to Live
When you log in to Paypal Manager, check your Service Summary to ensure that your Hosted Payment Pages is set to Live. If it is not live, you will need to enable it.
Ensure Your API User Has the Right Permissions
The username and login of the API user must have at a minimum API_FULL_TRANSACTIONS. See Payflow's documentation.
IP Address Filtering
If you have IP address filtering turned on, please be sure that you whitelist CP Pay. For a list of IP addresses, please contact Support.