eFootball Data Transfer Failed and Old Konami ID Account Recovery Request

I have been experiencing a serious problem with my Konami ID and eFootball mobile account since 26 August. When I try to transfer my data and log in with my Konami ID, I receive error messages such as “Some data was not transferred before the process was interrupted” and “Cannot Transfer Data – There’s no data to transfer,” and I cannot access my account. Because of this situation, I am completely unable to log in to my old account and use my existing progress and data in eFootball mobile. I have not received any ban notice or similar warning; I simply cannot complete the data transfer even though I am following the normal steps. I kindly request that my old eFootball mobile account linked to my Konami ID be found and fully restored, and that the data transfer/login problem be permanently fixed so that I can continue using my account without losing my progress.