Redirect to checkout/complete even if payment error

Hello,

I'm configuring the Paybox payment method for a new website and I have problems with redirection.

I'm always redirected to the checkout/complete page even if the payment return an error (wrong card, cancel button, error message due to wrong integration...) I'm always redirected to the checkout complete page that says that the order is OK and will be processed soon.

The readme.txt is lacking some documentation about return url to configure on the paybox sytem. I saw that the commerce_paybox module define a commerce_paybox/auto url and I imagine I have to define that url on paybox and the module will do different things depending the code returned by paybox, but it doesn't seems to work as expected...

Any help / documention would be really appreciated.

Thanks