I'm also gonna post for people who can't post as I know some. Discover credit and Visa debit's both being met with "this card is unavailable" with no error code. They are in the NA region, are using the correct addresses, and have followed ALL of supports' troubleshooting tips with no fix. It has been 11 days since the issue began as of April 30th and no word from Square Enix. At this point I am wondering if Discover and Visa are no longer accepted by the new payment processor even though their most recent post says they are.