I Was Banned from PUBG Mobile for Unauthorized Device Usage Despite Playing Fairly

I am writing regarding the unfair ban applied to my PUBG Mobile account today. My in‑game nickname is 7UP LEADER and my player ID is 5743390853. When I tried to log in, I saw that my account was banned with the reason stated as “unauthorized device usage”. I have never used any third‑party application, emulator, cheat, script, plugin, or similar tool, and I do not use any unauthorized software or method that would give me an advantage in the game. I play the game only on my own device in a normal way and I respect the game rules and the user agreement. I request that my account be examined in detail, that the ban reason and logs be checked carefully, and that if this ban was applied by mistake, my account be reactivated and the penalty completely removed. I kindly ask you to inform me with a clear and detailed explanation after your review.