Updated to iOS 14 and cannot verify email
I just finished installing iOS 14 onto my iPhone XR and I'm trying to go through the process of two-factor authentication. An email with the verification code got sent to my current email I have access to, I entered it correctly and a pop-up comes up saying, "Cannot Verify Email: This email address is not available. Choose a different address." I've tried this with 6 different codes already and same thing.
No, I am NOT trying to change my email during this time because my "rescue email" is already set up.
I do not want to make a new email address just to gain access back into my phone.
I've also turned off my iPhone and turned it back on hoping to refresh to process but it's still giving me the same prompt. Any solutions would be greatly appreciated.
iPhone XR