How to Unbind or Change Google 2FA

Last updated: 12/09/2025

You can reset the Google Authenticator you use for two-factor authentication (2FA) by following the step-by-step guide below.

If you have lost multiple account security settings including Login Password, Email address, Phone number, Google 2FA and Trading password, please refer to article What are Security Settings and how to reset them

Contents
1. Lost access to current 2FA
2. Current 2FA still in use, but wish to switch Authenticator to a new device

1. Lost access to current 2FA

1.1 Rebind 2FA Using Saved Google Security Key

If you have saved the Google key during your initial Authenticator setup, you can use it to rebind the Google Authenticator on your device. Once rebind, enter the six-digit code to log in to your KuCoin TR account.

Step 1: Select the Google verification code for your KuCoin TR account, long press to jump to the verification code screen.
Step 2: Tap Delete Account in the top right.
Step 3: Then, follow the steps in 2. Linking Google 2FA of this article to relink your KuCoin TR account and Google 2FA.

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Step 4: Once done, enter the six-digit code to log in.

1.2 If you bind account with email, manually unbind Google 2FA (Via App)

Step 1: Select "2FA unavailable?" on the 2FA login page.

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Step 2: Enter your trading password and the email code sent to verify your account. Follow the instructions, completing Identity Verification and submit a request to have 2FA manually unbound.
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1.3 If you bind account with phone, change Google 2FA via SMS code (Via App)

Step 1: Logging into the account via SMS code, navigating to avatar, select “security”

Step 2: Clicking “change” next to google 2fa, verify SMS code, then bind new google QR code.

2. Current 2FA still in use, but wish to switch Authenticator to a new device

2.1 If you’ve backed up the key:

Refer to the article on How to Enable Google 2FA. Use the key to link Google Authenticator on your new phone, then safely delete the key from your old phone.

2.1 If you’ve not backed up the key (App):

Step 1: Log into your KuCoin TR account, then navigate to Account Security to change your Google 2FA.

Step 2: Go to Security Settings and select Google Verification. Click the "Change" button.

Step 3: Send and enter the SMS or Google 2FA code to pass verification.

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Step 4: On the Google Verification page, scan the QR code or enter your Google security key manually. Once linked, the app will generate a 6-digit code that changes every 30 seconds. Enter this code to complete the setup.

If you’ve not backed up the key (Web):

Step 1: Click on the avatar located on the upper right corner and select "Account Security"

Step 2: Locate Google Verification , click on "Change"

Step3: Confirm "change Google Authenticator" and input your old Google 2FA code

Step4: After that, you will see the new Google QR code and secret key. You can either scan the QR code with the new device or manually enter the key to re-bind. Enter the newly acquired code and activate it.

Note:

a. If you exit the page before clicking Activate, changes to your old 2FA will not be saved, remaining usable.

b. Withdrawals are disabled for 24 hours after updating 2FA settings to protect your assets.

c. Once verified and active, the system automatically changes and links your new 2FA. The old 2FA will no longer work and should be deleted as soon as possible

d. When completing Identity Verification, upload the required photos while following the instructions closely, or your appeal may be rejected.

e. The "2FA unavailable?" button is only found on the login page via App. If you’re logged in, you’ll need to log out and return to the login page.

d. For more information about resetting Google 2FA via web, you may also refer to this article: What Are Security Settings and How to Reset Them?

We hope this article has been helpful. If you have any other questions, please contact customer support directly, or submit a ticket for assistance.