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Novaz AuthenticatorGET

NDAX 2FA: how to set up an authenticator app

By the Novaz team · Updated October 29, 2026
Novaz steps checked against version 1.0.5

On this page
  1. Turn on 2FA with an authenticator app
  2. When NDAX asks for a code
  3. If NDAX rejects your code
  4. Changing phones
  5. If you lose your authenticator
  6. Official NDAX help

NDAX is a Canadian crypto exchange, and you can't use it for long without two-factor authentication (2FA): its help center says deposits, withdrawals and trading stay locked until 2FA is on (NDAX, NDAX). The only method NDAX describes is an authenticator app. This guide uses Authenticator App - Novaz on iPhone, but any authenticator app works the same way.

How we checked this guide: the NDAX steps come from NDAX's own help center, linked below. NDAX's support pages block automated access, so we read archived copies of them on web.archive.org (saved between August 2025 and February 2026) on October 22, 2026. We haven't tested them on an NDAX account, so a label may differ slightly. The Novaz steps are checked against the app, version 1.0.5.

Turn on 2FA with an authenticator app

NDAX's two setup articles describe the same screen: a Two Factor Authentication section with three numbered steps (NDAX, NDAX).

  1. Sign in at ndax.io with your username and password.
  2. Click Settings on the left side of the screen.
  3. Scroll down to Two Factor Authentication.
  4. Step 2 of that section shows a QR code. In Novaz, tap +, then Scan QR code. If the QR code is on the same iPhone, take a screenshot and use Choose a photo. See scanning a QR code on the same iPhone.
  5. Step 2 also shows the key as a red code with a copy button. To use it instead, tap + in Novaz, then Enter key manually, and paste it as the Setup key. See What is a 2FA setup key?
  6. Type the 6-digit code from Novaz into Enter Generated Code Into the Input Field Below and click Enable.

NDAX then signs you out, and you sign back in with a code from Novaz.

NDAX's codes are the standard 6 digits every 30 seconds, so scanning and typing both work. NDAX calls the key your "16-digit seed code" and warns never to share it or make digital copies (NDAX).

None of NDAX's 2FA articles mention backup or recovery codes. Without a Novaz backup (iCloud backup or a backup file), its keys exist only on your iPhone, so without that phone your way back in is the identity check described below.

When NDAX asks for a code

NDAX asks for a code every time you sign in and when you request a withdrawal, and its help describes no trusted-device option (NDAX, NDAX). NDAX also says to check that the address is https://ndax.io/auth/login before you enter a code.

If NDAX rejects your code

NDAX says most code problems come from the phone's clock being out of sync. It accepts codes within a two-minute window, so a clock that drifts further than that locks you out (NDAX). On iPhone, open Settings > General > Date & Time and turn on Set Automatically. If it's already on, NDAX suggests turning it off, waiting a few seconds, and turning it back on. Novaz also warns you when the clock is 15 seconds or more off.

Next, NDAX suggests clearing your browser's cache and cookies, and after that a 2FA reset (below). More causes are in Authenticator code not working?

Changing phones

NDAX has a Recover button for this, which only works while you still have the old phone. This article spells the section Two-Factor Authentication, with a hyphen (NDAX):

  1. Sign in and go to Settings, then Two-Factor Authentication.
  2. Click the green Recover button.
  3. Enter the current code from the app on your old phone.
  4. NDAX shows your QR code and key again. Add them to Novaz on the new iPhone.

If you use Novaz's iCloud backup or a backup file, you can restore your accounts on the new iPhone instead. Without one, do this before you reset or give away the old one. See How to transfer your authenticator app to a new iPhone.

If you lose your authenticator

First check every authenticator app you use for an NDAX entry. If you can't find your code, or think someone else has it, NDAX says to email support@ndax.io right away (NDAX).

To remove 2FA without a code, NDAX uses a reset with a video identity check (NDAX):

  1. On the NDAX sign-in page, enter your username and password, then click Reset 2FA.
  2. Enter your account's email address and click Continue. Type the 6-digit code NDAX emails you into Enter Verification Code and click Verify.
  3. NDAX sends you to Sumsub, its identity verification partner. Record a short video of yourself reading out the digits on screen, then select Upload Video.
  4. After NDAX approves it, you get an email with the subject Two-Factor Authentication reset. Click Reset Two Factor Authentication in it.
  5. Enter your phone number, choose a call or a text, and type the 6-digit code you receive. Click Verify.

NDAX tries to finish reviews within 24 hours (NDAX). After the reset you can sign in with just your username and password, but you must turn 2FA back on within 20 minutes, or the account may lock again. Have Novaz ready before you click the email link. NDAX's help doesn't describe turning 2FA off any other way.

If the reset email doesn't arrive, check that you used your sign-up email and look in spam and other folders (NDAX). See also Lost the phone with your authenticator app?

Official NDAX help

More guides: Crypto exchanges and wallets