With two-factor authentication, your account can only be accessed on devices you trust, like your smartphone or personal computer. When you want to sign in to your Bittrex Global account, you will need to provide two pieces of information—your password and the six-digit verification code that is automatically displayed in your authentication app.
If you are having trouble with your two-factor authenticator, your device may not be syncing. Typically, two-factor failures are due to the clock on your phone drifting. We only have a two-minute window for 2FA confirmations so if your clock has drifted beyond that, you will not be able to login. Please make sure your phone is configured to sync your time with the cellular network.
You may need to remove two-factor authentication from your account for several reasons. For example, your phone may have been lost, require a factory reset, or you may be upgrading your device. As this code can only be accessed on devices you trust, you will want to remove the 2FA from your account prior to device changes if possible.