Recover subscribers/unable to access Feedburner account

[Carrie Brooker]

Hi - I help manage a corporate blog called Legal Current (https://www.legalcurrent.com). We used Feedburner to manage our email subscribers. My colleagues who initially set up our Feedburner account, years ago, left my company and didn't share login credentials. Without those, I can't access our Feedburner account. I'd like to access our subscribers' emails so I can export them now that Feedburner shut down. Is there any way to get access?

Thank you,

Carrie Brooker