Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi ,
Go to Microsoft Store > Library > Included with devices > I believe you can't redeem while you have an active subscription. You would have to terminate your 365 Basic subscription to redeem 365 Personal.
The best way to contact Microsoft is using the Home chat. Access the link below and type "Office." Below, there will be a Contact Support option.
Enter your details to open the chat, and a Microsoft agent will come to assist you.
https://support.microsoft.com/home/contact
To confirm, do not perform any procedures before confirming with Microsoft Support.
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Thanks