Woocommerce Checkout Redsys payment error

I have a problem with enfold theme, woocommerce and redsys module.

When I make the purchase of a product and proceed to the payment, the site does not redirect to the redsys payment page, instead it gives the order as paid and completed.

You can take the test on the “reservas” page in Spanish language and try buy nestor 1€.

Redsys Thecnnical Support response:

From the technical department they confirm that they have appreciated that in the web of completion of the order, instead of carrying out the redirection to the SIS to make the payment, it is automatically redirected to the correct payment URL, without going through the SIS.

This is because the topic they are using is ignoring the form data generated by the Redsys module. This page of end of purchase must redirect to the generated URL passing as parameters of the form the rest of the data generated by the module.

Please, check this page in the theme of Woocommerce for the redirection to do it in the indicated way.