Woocommerce and Secupress checkout problem

Hi everyone, i got a problem with Secupress and Woocommerce. When i go to checkout with Secupress enabled, i got the following message : “Error while processing the order. Please try again.” And when i disable the Secupress plug-in, there is no problem. I tried to disable one by one all of the Secupress fonctions and protection, but even when the plug in is not set up, i can’t finish the order on my shop.

Pls help me ;(