He got the wrong fan from his saler. And are not super willing to ship the correct one to europe.
He was willing to take your money and ship the first fan to you.
It was HIS mistake...HE should have checked it out before he shipped it to you, knowing it was headed to Europe.
This is all on him.
Call your card company and put a hold on the transaction now, just in case. You can reverse it later when (if) he mans up and does the right thing.
How much was the fan in question? I assume that the fan could be swapped out by you if he sent the new/correct one? The cost to ship to europe may outweigh the cost of the fan, so he may just eat the cost of the first fan....