Locked out of Dev Email (verification code to random #)
I (17) had my aunt set up an email account to help publish and maintain my app on the Play and App stores. I have access to it but used she's essentially my sponsor for the apps until I turn 18. It worked well and I got the play store app into closed beta testing last week.
But a few days ago, the email locked me out for "unusual activity." I entered the password, then entered the 2FA text code successfully, but it's now hard-locked me on the screen from the attached image. The problem is, this number (ending in 78, our numbers end in 1 and 2) does not belong to me or my aunt and neither of us have registered it in any way with the account. It's sending a 3rd verification code to a random number and "Try Another Way" just cycles back to the same screen with no alternative.
The email itself also seems to be deactivated, does not receive new emails, and most importantly has shut down my beta testing and the app screen itself. I submitted a Google Account Recovery Request but that link also hard locks me to sending a code to the random number. Google support/searches have also been useless.
Has anyone experienced this before, or have suggestions to get our account access back?