PayPal - state payment error

[klarodj]

Hello everyone,

I state that I am new to Prestashop, and at the first configurations.

 

I configured the PayPal form, in fact I can make the payments, which are properly credited to my account. However, once payment is made, the system sets the order in the "Payment Error" state, and send an email error notification to my client.

 

Why? how can I avoid this unsightly problem?

I maybe wrong configuration?

 

Here I leave my PayPal module configuration:

 

Payments by credit card (Visa, Mastercard, Amex, Aurora), and PayPal

Sandbox mode (test): Not active

Payment Type: Direct (sales)

Email associated with your PayPal account: set correctly.

 

The other parameters are not set.

 

Thanks in advance for your response.