Mobile Legends Bang Bang Complaint About Inaccessible Account Linked to Old Gmail

I am unable to log into my Mobile Legends Bang Bang account on my iPhone. The account was registered with an old Gmail address that I have not had access to for about two months, and today when I tried logging in again, I was unsuccessful. I contacted customer service to recover my account, but since I could not provide the requested information without logging in, the process could not move forward. My in-game username and ID are •©®•, and I have spent over ₺10,000 on this account, which makes losing access especially distressing. This is the first time I have experienced such an issue, and I request that my account be restored and my access reinstated so that my grievance can be resolved.