The access to the digital book you purchased will not be automatically activated on the platform.
After completing the purchase you received an email with the subject “Código de acceso/licencia Campus” in which you will find your new content access code.
You will have to log in campus.difusion.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.
If you already have products on your dashboard and wish to add more codes, you will have to click on the icon next to your name on the top right corner of the screen and then on "+ Add code".