Guys - telephone their support line and your code request gets escalated. I'm from the eu (UK). Codes are sent in batches (presumably from HQ), escalating means your code is sent in the next batch. I tracked down the UK support line with a simple google - "what is square enix customer support number"
08706000182 (09:00 and 18:00 hrs UK time), rang this and my code arrived that day.