As you can see in this news article shipments with Correos from Spain has been temporarily stopped. It seems that FedEx are still processing shipments for now.
I hope that this is a very short break in service, but I wanted to let you know. If you are in the US and would like to order something, I would choose the DHL /FedEx option when you get to the shipping section of your order. To the US we always ship FedEx.