Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I'm really sorry to hear about this, Sang Lee.
I know how frustrating it is to lose access to something you paid for, especially when you still have the receipt. However, I'd rather be upfront so you don't spend time chasing a fix that probably isn't there:
- After the waiting period, a closed account would be permanently deleted, along with any licenses on it. Since it's been more than a year, your old account and the Office license that was on it are almost certainly gone.
- When a Microsoft subscription/license was first redeemed, it's permanently linked to the Microsoft account you used. Microsoft doesn't offer a way to move it to a different account.
- Each product key can only be redeemed once. Even with the receipt, you won't be able to redeem that key on your new account.
If you still want to ask Microsoft directly, you would need to reach out to the support team at https://support.microsoft.com/home/contact. Microsoft Q&A is just a user-to-user, so nobody here can decide on an exception like this. I'll be honest, license is often untransferable.
I know this isn't what you were hoping to hear, but I think it's better to be direct. If Support can't help, you'd need a new Office license (a current one-time purchase or a Microsoft 365 subscription) on your new account.