Something here might help:
Activate Office - Activate Microsoft 365, 2019, 2016, and 2013
https://support.microsoft.com/en-us/office/activate-office-5bd38f38-db92-448b-a982-ad170b1e187e#bkmk_activateoffice
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(If the reply was helpful please don't forget to upvote or accept as answer, thank you)
Best regards,
Leon