I don't want to give false hope if I'm mistaken, and I'm not sure if this would apply to us, but there was an announcement on the Japanese side of the forums: It mentioned an update to the "Payment Agency's System".
https://forum.square-enix.com/ffxiv/...B%285-21-22%29
I had to use google translate to figure out what it was saying. I do not know if this is affecting us or not, or if this is a quiet solution to the problem that hasn't been passed along to be announced in any other language than Japanese.