abcteach Helphome >> Payment
The CVV2 number is a 3 or 4 digit verification number printed on the back of your credit card. These numbers are not any part of your Credit Card number. When paying by credit card this number helps us be sure that only the person who physically has your credit card can make the purchase. The CVV2 number is not required to make a credit card purchase of an abcteach membership. It is optional. If you choose to enter that number on the form, it must be correct, otherwise leave it blank.
If you are using a Visa, Mastercard, or Discover card, the CVV2 is a 3 digit number that appears to the right of your card number on the back of the card (see below).
If you are using an American Express card, the verification number is a 4 digit number that appears on the front of your card, above and either on the left or right of the card number (see below)