Recovering My Old MovieStarPlanet Account Without Email or VIP Payment Proof

I have an old account on MovieStarPlanet that I opened years ago. It doesn't have a registered email, but it does have items and tickets I previously loaded. I used it for leveling up, and I explained this to the representative who contacted me, also providing visual evidence. However, they said they couldn't do anything without VIP payment proof. The account's name is ezgilakko, and I last logged in in 2019. Naturally, I don't remember the password. We need to find different ways to verify that the account belongs to me. You can proceed based on the last password I remember. I request that my issue be resolved.