Re-suscribe My Recovery Gmail Again

I use Gmail on my Xiaomi phone and my Free Fire account is linked to my Gmail address (aviavis***@gmail.com). On 25 July my Gmail recovery for Free Fire was unsubscribed by a hacker and since then I have lost access to my Free Fire account. Because the recovery Gmail was removed without my permission, I no longer receive OTP codes from the Garena team and I cannot log back into my Free Fire account. This situation is causing me serious inconvenience, as I did not authorize any changes and I am unable to secure or recover my account. I request that my recovery Gmail for this account be re‑subscribed so that I can again receive OTP codes and recover my Free Fire account, and that any unauthorized changes made by the hacker to my Gmail or linked game account be investigated and reversed.