If you have purchased a license code for access to the digital textbook/a only digital textbook:the new access to the content is not automatically activated.
Once your order has been confirmed, you were sent an email with the subject line “Código de acceso/licencia Campus”, where you will find your access code.
To activate the content you will have to log in https://campusdifusion.com and click on the blue "+ Add a code" button. (or the "+ Add code" button located on the content tab if you have already added some content) and introduce your 20-character access code.