eFootball Konami ID Email Inaccessible - Account Recovery Blocked

My eFootball account is linked to a Konami ID, and I have not been able to access the email address connected to this account for about three months. Because I cannot log in to that email, I am unable to manage or update my Konami ID information, including changing the registered phone number. I still have important information that proves the ownership of my account, such as my in‑game ID, my username and the device I used to access the game. I want to continue using my eFootball account, but I am currently blocked because all recovery options go through the old email address that I can no longer access. I kindly request that my email address registered to my Konami ID be changed, or that you provide an alternative verification process so that I can regain full control of my account and update my phone number. I am ready to share my in‑game ID, username, device information and any other details you may need to confirm that I am the rightful owner of the account.