eFootball Mobile Account Hacked and Konami ID Email Changed Without Permission

I play eFootball Mobile on my iPhone with a Konami ID, and today I noticed that my Konami ID account appears to have been stolen and the email address linked to it was changed without my permission. When I tried to log in, I saw that the email shown on the Konami ID login screen was different from mine. I have never authorized any change to my email or my account and I am very worried about the security of my personal data and my in‑game progress. I am the rightful owner of this account and I request that this unauthorized change be investigated as soon as possible. My clear expectation is that my Konami ID be recovered, the account be re‑linked to my own email address, and that I regain full access to my eFootball Mobile account. I kindly ask you to urgently review this situation and help me recover my account and secure it against similar incidents in the future.