Why does my ISBN code access last only 31 days and how can I reactivate it?
The access to the free digital resources of your book (audio, videos, transcriptions, etc.) activated with the ISBN code of the printed textbook will last for 31 days. However, as long as the textbook is still available for sale and therefore still available on the platform, you can reactivate the access to the content as many times as needed by entering again the ISBN code.
To reactivate it, click on the Contents tab, then click on the blue button + Add code:

You must enter the student book ISBN code again, which you will find on the back of the book. You must introduce it without adding spaces, hyphens or any other punctuation marks.

You do not have to enter the ISBN of the workbook, since entering the ISBN of the student book already activates all the contents available for both (student book + workbook).
Related Articles
I have purchased a printed textbook , how can I access the audio tracks and other free resources?
To access the associated resources, you will need to enter the ISBN code of your printed student book on the Campus Difusión platform ., which can be found on the back of your book, below the barcode. If you are not yet registered on the the Campus ...
I have purchased a printed textbook , how can I access the audio tracks and other free resources?
To access the associated resources, you will need to enter the ISBN code of your printed student book on the Campus Difusión platform ., which can be found on the back of your book, below the barcode. If you are not yet registered on the the Campus ...
I have purchased a printed textbook , how can I access the audio tracks and other free resources?
To access the associated resources, you will need to enter the ISBN code of your printed student book on the Campus Difusión platform ., which can be found on the back of your book, below the barcode. If you are not yet registered on the the Campus ...
I have purchased a printed textbook , how can I access the audio tracks and other free resources?
printed student book on the Campus Difusión platform ., which can be found on the back of your book, below the barcode. If you are not yet registered on the the Campus Difusión platform , you can do so by clicking on this link. If you want to ...
I have purchased a Hybrid Edition and the ISBN code to activate the content does not work
If you purchased a hybrid edition (printed book + access to the digital version), you will find your access code on the internal part of the cover. It is a 20-character code that gives access to the digital book and all its associated resources ( you ...