To recover your LeoDex keystore account (likely a wallet on Arbitrum), you'll need your 12-word seed phrase (mnemonic). Here's how:
Open your wallet app or browser extension (e.g., if it's MetaMask or similar used for LeoDex).
Go to Settings > Security & Privacy > Show Recovery Phrase (or "Reveal Seed Phrase").
Enter your password/PIN to view it. Write down the 12 words in order—never share or screenshot them.
If you've lost access and don't have the keystore file/password, seed phrase is the only backup. For LeoDex-specific help, check their docs at leodex.io or [email protected]. Secure it offline immediately.