Account Recovery Failure

Do you have email id and password for the account to which you are migrated now and where you did the typo? You can login to this account and then change your email address to new one. To change email address for your account follow these steps: https://support.xbox.com/en-AU/my-a...nt/change-email-sign-in-for-microsoft-account

I'd recommend checking out this link here: https://support.microsoft.com/en-gb/help/17875/microsoft-account-recover

after getting the a failure notice or response from the account recovery process, contact support with the important number on that email. they somehow like manually pull it up, like they will send you an email around 2-3 days. Goodluck

I can not help with you getting your rank back but here is something to try regarding recovery.

Go into memory> profiles and check to see if there is a partial file. (It should be checked with an exclamation mark), delete it.

Only the profile NOT the items.

Then clear your cache.(optional).

Restart your console then attempt recovery again.

Its likely you have tried this already though!.

The fact that the you HDD can't be detected by your console it usually means the drive has experienced a physical failure. The only way to recover that data is to contact a company specialized in data recovery.