Miscellaneous topics that do not fit into specific categories.
Hello Ricco49, thanks for posting this in our community.
Microsoft 365 subscriptions are account-based and do not require a product key for activation. Please make sure your wife’s Microsoft account is listed as a member of your family group by visiting https://account.microsoft.com/family.
Once confirmed, she can check her subscription status by signing in at https://account.microsoft.com/services. It should show that she has access to Microsoft 365 through your Family subscription.
If the issue persists, you may need to uninstall Office from her device and reinstall it from https://www.office.com while signed in with her Microsoft account.
Hope this helps.
Kind regards,
John Oli