Hello,

I download the kickstart drupalcommerce and configure the payment method to use paypal (with the PayPal Express Checkout module).

I fill the api username, password and signature and use the sandbox

As a user, fill my cart and checkout. Then I get this message

PAYMENT

Error message Communication with PayPal Express Checkout failed. Please try again or contact an administrator to resolve the issue.

I didn't found any log to indicate me something

1°. Do you know how to activate de log for this module ?
2°. Someone has ever get this error ?

Thank you for your answers