Are you receiving a “code invalid” error notification?

Perhaps you tried pasting your code into the coupon code field during checkout instead of the dedicated authorization code field on the homepage. Please paste the authorization code into the authorization code field located on the left side panel of the welcome page and hit “submit”. The system will then automatically put the correct book into your cart and apply the discount.

Did you fill in the code manually? Perhaps there is a spelling error; we strongly recommend copying and pasting the authorization code instead.

Did you copy and paste the code? If so, please ensure there is no empty space at the beginning or the end of your code when selecting it to copy.

Is it possible you used your course registration number instead of your authorization code? Our authorization codes start with letters (e.g., AIC or GCI) and our course registration numbers consist of only numbers.