Payment Method Registration Errors [Error Code 401 and 601]

[Lament]

I posted a while back to say I had successfully registered my CC.

Today, my sub went through successfully. I just got an e-mail about it 2 or so hours ago.

In case it helps figure out why this error is happening/to who, details, again:

Country: Brazil
Account Region: Americas
Legacy?: No
Card: VISA credit card (int'l)
Note: Crysta is not a payment option for me. My SE account is new and was created during early access. I had never registered any payment methods in it.

I registered my credit card several days ago, via the SE account management page, NOT MogStation. I did not use spaces. I didn't get any errors. I was then able to get my subscription set up on MogStation - again, no errors.

Today, my sub payment went through without any problems. I did not get 401 or 601.

I know this is unhelpful to everyone who can't get Crysta, Time Cards, and is still unable to pay, but I'm dropping the info here just in case it helps figure out if there's a pattern for the people who are having problems.

@BraveVesperia: EU Time Cards will only work on accounts that are lumped into the EU region (this includes oceanic players). If your account is lumped into Americas, you won't be able to get the card to work. They're region-locked.