ID Verification Issue (Xbox)

 The Battlefield 6 beta asks me to verify my identity, but it keeps sending an identification code to an unfamiliar email address.

When I log into my EA account online, I encounter the same problem. My EA/Xbox account is somehow also linked to this unfamiliar and/or inaccessible email account. I can log into EA via a gmail account but I cannot connect my EA account to my real email address  because it is already connected to a mysterious hotmail address.

So it seems as if I can neither purchase or play the game without verifying an EA account that is no longer within my control. And I do want to buy (and play it) on my Xbox.

Perhaps the most confusing thing is that I'm *not* having this issue with any other Battlefield game. The games just automatically log me into Battlefield via my existing Xbox account. Equally weird: although I *have* managed to get into the beta on my Playstation 5, I do not have an EA account or PSN plus - it just lets me straight in without ID verification. 

What is going on, and can it be resolved?

thanks