A common issue is letters and numbers that look similar. Notably, I, l, and 1.

  • Capital I as in India.
  • Lowercase l as in leopard. We do not use this letter in our codes.
  • The number 1. We do not use this number in our codes.


Another reason may be that you have a used textbook and the code is no longer valid. You may also purchase course access only.

Duplicate Account

Users may also have a duplicate account. If you receive a message that the access code is associated with another account, then check to make sure you are signed in to the correct account.

Out of Uses

If you haven't purchased a new text you are not guaranteed a complimentary access code. 

If you have purchased a new text and the access code reads "Access code has run out of uses" after an attempt to use the code, then check to make sure you're logging into the right account (see Duplicate Account above). If you're still receiving this error, then please submit a ticket with the access code, so we can resolve this issue quickly.

For access codes inside printed textbooks, when contacting support, please provide the access code you tried entering by copying and pasting, along with a picture of the code from your book.

New Support Ticket