Linking one game account with two ea mails.

I have two accounts: a BlueEgo account (my main account) and a BaNaing007 game account. I play both accounts on the same phone and have two EA emails. Yesterday, my brother wanted to play the BaNaing007 account, so I gave him access. After he used it, he cleared the app data and logged back in. Now, the EA email that was linked to my main account, BlueEgo, got linked to the BaNaing007 account instead, and I can’t access my main account anymore. Currently, the BaNaing007 account is linked to both EA emails. Please help me with this.

Please help me recover my BlueEgo account. As proof of ownership, I have receipts from purchases made on the web store, and I can also provide the in-game lineup of my players.