Both your account and all your transactions will be secured not just with a standard static password, but also with one-time passwords (OTPs) refreshed every 60 seconds.
Choose one of 3 types of OTP tokens: hardware keychain token, iOS and Android app or chat bots in Telegram, Viber, and Facebook Messenger.
You can configure this setting in the Security Settings section of your account.
If you need to restore access to your account with enabled two-factor authentication, please create a ticket describing your inquiry in detail and be prepared to go through the verification.