Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello Gabriela Maria1, welcome to the Microsoft Community.
I'm sorry to hear that your key is damaged and cannot be recognized. However, if only one digit is unclear and you confirm that it is a number, you can try each digit from 0 to 9 one by one.
If you have any doubts about this, you can try contacting online support for assistance with account and order issues. They can help you further investigate, as community members do not have the authority to assist with such matters in order to protect user privacy.
- Go to the following Web site: Contact - Microsoft Support.
- Enter the keywords of your question in the search box, for example, "subscription/refund" and select Get Help.
- Select Contact Support (sign in to your personal Microsoft account).
- Under Products and services, select options related to your product, like Microsoft 365 and Office.
- Under Category, select Manage my subscription.
- Go to Confirm.
Please Note: The Chat support team only works at certain times, so if the last window says you are not available, try to open it again the next day.
If you think this information is helpful, or if you still have any questions about it, feel free to let me know in your reply!
Best RegardsEliac | Microsoft Community Support Specialist