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Paypal Payflow Pro || User authentication failed

New Community Member

Paypal Payflow Pro || User authentication failed

We are trying to set up PayPal Payflow Pro on a Shopify store but when we attempt a test purchase we are receiving an error message User authentication failed

This happens in test mode as well as live. Is there a way for us to get more information about this error? Can you provide some assistance please?

 

Any help is appreciated.