> But when I tried to put my product key for the said item it keeps on saying that it is for another email and the said email is the same as what I've created but in all lowercase form
Where did you enter your product key?
To redeem the Office 2019, please go to www.office.com/setup or Microsoft365.com/setup.
If this error message also prompted on those 2 links, this redemption process may be finished.
Could you please use this email account with lowercase letters log into Services & subscriptions?
- If you see the Office product like the following image, the account with lowercase letters form has been successfully bound to your Office, that you can install or reinstall Office later via this Microsoft account.
- If the account could not be logined into Services & subscriptions, please try the suggestions mentioned in article "I forgot the username or password for the account I use with Office".
Besides, please check whether the link is helpful.
You can't sign in to your Microsoft account
Any updates, please let me know.
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