Hi, @Megan Beck
To help narrow down the issue:
- What is the exact Office product shown in the purchase or redemption email, such as Office Home & Student 2021, Office Home 2024, or Microsoft 365?
- Where did you purchase the product key: directly from Microsoft or from a third-party retailer?
- When you sign in at https://account.microsoft.com/services is the Office product listed there?
Once an Office product key has been redeemed, it is normally linked to the Microsoft account used during redemption. You should not need to redeem the key again.
If the Office product appears under https://account.microsoft.com/services select "Install" from there and use that installation to activate Office.
Also, if the key was purchased from a retailer, the purchase may not appear in your Microsoft order history even though the key was successfully redeemed.
Click "Add comment" to let me know.
Thanks!