I'm trying to purchase subscription to ffxiv (3 days left of the free stuff ~-~) and everytime I do it asks me to put in my address and then tells me my post code is invalid.. why is this? I've tried my home address and my work address, and neither postcode is valid.. I'm English but I don't see why this should make a difference? I posted a ticket through customer support last week but haven't had a reply yet and really want this fixed before my subscription runs out.