Many of the countries which you might know or not know on the this planet are bound to be excluded from the promotions. Based on the forums alone you can imagine how much is the player base happy about this inequality. As such it would make sense to make the last promotion unrestricted in terms of location and related to the digital goods.
I suggest to make a deal with Valve's Steam.
Steam is not just selling SE products, but even the FFXIV itself is available for the purchase there.
My suggestion is this:
For limit duration include the promotional codes for anyone who buys SE products or if you want to be more specific games related to the Final Fantasy franchise.
This would not just fix the problems that we have right now but also increase the sales of the other games. I think it's one of the best solutions.
I sincerely believe that the things will be set right... eventually.