Help recovering a Feedburner login

[Josh French]

Hello! We've had a Feedburner feed since 2012, but it was set up by an ex-employee and no one knows what email was associated with the account. We also missed any migration notices that may have been sent to that account. Is there a way to recover the original email address and/or have it changed to another address at our domain?

Thanks so much!

[Josh French]

Is Maks Verver the person who can field these requests? Our URL is feedburner.com/upworthy. Thanks!