Mobile Legends Account Recovery Issue for Player ID 75637419

I have been playing Mobile Legends: Bang Bang on my Android phone since around 20 June 2017, and my main account is now inaccessible because I cannot complete the verification process. My in‑game ID is 75637419 (2136). When I try to log in through my linked Facebook and Moonton accounts, the system asks for a verification code that is sent to my email address. I no longer have access to this email, so I cannot receive the code and cannot enter the game. To solve this problem, I contacted support both through the in‑game support section and via the website form. However, the responses I received said that the information I provided was not correct, and therefore, my request could not be processed. I have been using this account for years and have also made purchases on it, including my first purchase on 17 May 2019 via Google Play for a 50‑diamond top‑up, so losing access is very upsetting for me. I am requesting your help to recover my account and to update or change the bound email address, or to provide an alternative way to verify my ownership of the account. I am ready to share any additional information you may need, such as further account details or purchase information, and I can also submit my first purchase receipt so that you can confirm that I am the legitimate owner. I kindly ask you to review my case again and help me regain access to my Mobile Legends account.