There is not currently a way to end the trial early. After the trial period expires, the payment box you saw when you chose the 14-Day Trial option will reappear. At that time, you can choose to pay with a credit card or an “Access Code” purchased from the bookstore. In the meantime, if you have a access code we recommend taking a picture of the code with your phone (if you are able) and keep it in a safe place. The Expert TA does not replace lost access codes.