We recommend completing Ocean identity verification and registering a valid refund method before customs confirmation at departure, so your refund can be processed promptly after customs confirmation.
If you still haven't registered one after leaving Japan, or you need to change the refund method you registered, first log in to Ocean and check whether that record allows changes. Make sure your refund method is right before you tap "Withdraw". Check the page to see what you can change and when the change takes effect. If you can't make the change on the page, please contact Ocean customer support as soon as possible. After you submit a withdrawal, changes may not apply to that refund.