Hi.
I cant say what the Spanish set up is for PayPal, and i have to say you surprised me when you checked yours out and it came up with Spain and USA, far apart for sure.
I sell a fair bit through E-bay from my business, but buy only a small amount, how i found out that you could change things with PayPal was by accident really, i bought one item and had always used my home address for delivery, when getting ready to pay for this item i noticed that on the paying part of your account you could change the registered address for delivery, so i just went ahead, added my business address and paid. Have done it this way a couple of times now with no trouble and still have my ome address as well to use.
When you set up your account did you enter / register two accounts, one a credit card, and one bank account? i think PayPal make you do this so as to safe guard that you have two or more sources of money for payments if you dont have any funds in your PayPal account.
Go through the site carefully and change and add any accounts as well as the main used account, also verify another delivery address to where you want item's sent just in case.
Waiting now on something to finish, when it does i will double check my account and get back to you on what i find....If i win the item that is and don't get beat by a penny.