Cant get authenticator keys

Greetings

I've been away from gaming for a while due to private work. Upon my return, I encountered difficulty logging into my Mbox accounts as I seem to have forgotten the associated email addresses. I currently can access two accounts (usernames: aldenn, aldenko93) where I've made donations.

Unfortunately, I can't log in to the following accounts and have forgotten the associated emails to recover authenticator key

Username: aldenko, Password:
Username: aldencic, Password:
Username: hakercic1, Password:
Username: aldencic93, Password:

Characaters: Mboxa,b,c,d,e

Is there a way to recover these accounts without knowing the emails linked to them? Your assistance would be greatly appreciated. If there's a process for account recovery or if you could guide me on the steps to take, it would be incredibly helpful.

Thank you for your time and assistance.