How to Recover a Konami ID After an Account Hack

I am writing to report an urgent security issue regarding my eFootball account and KONAMI ID on my Android device. Yesterday evening I realized that someone had gained unauthorized access to my account and changed both the email address and the password of my KONAMI ID without my permission. At the moment I can still access my eFootball account on my device, and it remains linked to my Google Play account. However, I am very concerned that the unauthorized person may log in again from another device and permanently take control of my account. I kindly request that you urgently secure my eFootball account and KONAMI ID, block any unauthorized access, and help me recover and restore my original KONAMI ID information. I am the legitimate owner of this account and can provide my User ID and any additional proof of ownership you may require. I ask for your prompt assistance in protecting my account and resolving this security problem as soon as possible.