How do I enable two-factor authentication (2FA)?

1. Download the Google Authenticator app for iOS or Android.

2. In User Center, tap "Security," find Security Settings, and tap "Open."

3. Back up your 16-digit code and scan the QR code using the Google Authenticator app.

4. Enter the PIN code generated by the 2FA app to confirm the settings.

Now, you'll need to enter your Google Authenticator code whenever you log in or withdraw funds, enhancing the security of your account.