Hi @helen Gálvez ,
This is an English language forum, I suggest you try to post question in English.
Based on your description, I transform the language to English. Did you get any error message after enter the product key? Try to provide the detail error message here.
I suggest you refer to this support article and check if this is helpful:
Please be a bit more precise to explain your problem or you can upload a screenshot so that I can get more accurate solutions to this problem. I’m glad to help and follow up your reply.
If the response is helpful, please click "Accept Answer" and upvote it.
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