Reopen My Guest Account Please

I was playing Free Fire on my Android phone with a guest account. After I reinstalled the game, my old guest account disappeared and the game opened a new account instead. I can no longer access my previous progress. My old account was a pure guest account and I had not linked it to Facebook, Google or any other login method. After the reinstall, I lost my previous account and all my in‑game progress and items. I request your support to restore my old guest account and give me back my previous progress and items, and to help me log back into that account.