I've been using a password app with a dropbox sync feature. For years, I've been using an old email as the username because it was just the username to me. While I had connected with a PC when I was first doing password syncing, eventually I just went all-mobile ... and somewhere in there the move to mandated MFA seems to have gone into effect. I only noticed this due to a recent phone upgrade. After reestablishing the paid feature in the app to do the dropbox sync - I couldn't connect because it locks me into needing an emailed code after I authenticate.
I don't have that email (old job), and never setup a phone or backup codes as far as I know since I was not using the account that way. I know the password, and can change the email once in but cannot get in. There's not a lot of data in my account - how I do get to it; or ensure that the account/data is destroyed? (I found a "work around" since I still had two devices with active connections through the app and could copy them off).
Thanks for any help or guidance.