Skip to content
Novaz AuthenticatorGET

Digital Surge 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. Before you start: finish in one go
  2. Turn on 2FA with an authenticator app
  3. Keep the backup key safe
  4. If Digital Surge rejects your code
  5. Changing phones
  6. If you lose your authenticator and the backup key
  7. Official Digital Surge help

Digital Surge is an Australian crypto exchange, so the account holds your AUD balance and your coins. Two-factor authentication (2FA) is optional there, but once it's on, Digital Surge asks for a code from an authenticator app when you sign in, withdraw AUD or send crypto (Digital Surge). It also matters if you ever want to send crypto to an outside wallet: you can't apply for external sends without 2FA (Digital Surge).

The method is a time-based authenticator app (TOTP). Digital Surge says any TOTP app works. This guide uses Authenticator App - Novaz on iPhone, but other authenticator apps follow the same steps.

How we checked this guide: the Digital Surge steps come from Digital Surge's own help center articles, linked below, which we read on October 21, 2026. We haven't tested them on a Digital Surge account, so a label may differ slightly. The Novaz steps are checked against the app, version 1.0.5.

Before you start: finish in one go

The most common problem, according to Digital Surge, is a setup that stops halfway. If you refresh the page, leave, or come back later, the entry in your authenticator app won't be linked to your account. The app keeps showing codes, but none of them will be accepted (Digital Surge). So have your iPhone and your mobile number at hand before you begin. Support can't turn 2FA on for you.

Turn on 2FA with an authenticator app

Digital Surge's setup article, dated July 29, 2026, describes these steps (Digital Surge):

  1. Open your Profile page. On the dashboard, the menu with three horizontal lines at the top right has the Profile link (Digital Surge).
  2. Turn on the two-factor authentication option. A pop-up walks you through the rest. Read it, then select Start.
  3. The first step only asks you to install an authenticator app. The second verifies your phone number: select Send code, type the code Digital Surge texts you, then select Generate.
  4. Digital Surge shows a QR code and a setup key. In Novaz, tap +, then Scan QR code, and point the camera at the screen. If the page is open on the same iPhone, take a screenshot and use Choose a photo instead. See scanning a QR code on the same iPhone.
  5. To type the key instead, tap +, then Enter key manually. Enter "Digital Surge" as the Service, your email as the Account if you like, and the key as the Setup key. Digital Surge's codes are 6 digits and change every 30 seconds, which matches what Novaz uses for a typed key. More in What is a 2FA setup key?
  6. Select Next. Digital Surge shows your backup key. Write it down or store it offline before you go on.
  7. Type the current 6-digit code from Novaz into the verification field. When it's accepted, Digital Surge confirms that 2FA is on.

Keep the backup key safe

Digital Surge doesn't give you a list of one-time backup codes. It gives you one backup key, and its restore article has you type that key into an authenticator app's setup key field to get your codes back (Digital Surge). Anyone who has it can make your codes, so keep it offline and away from your phone.

Keep it even if you back up Novaz: without an iCloud backup or backup file, Novaz's keys exist only on your iPhone, and this key is how you get your codes back.

If Digital Surge rejects your code

Digital Surge's help names three usual causes for an "Invalid Code" or "Invalid TOTP" message (Digital Surge):

  • Wrong or unlinked entry. If setup was interrupted, delete the Digital Surge entry from Novaz (open it and tap Remove account) and start the setup again from your Profile page.
  • Expired code. Type it before it changes.
  • Clock out of sync. On iPhone, go to Settings > General > Date & Time and turn on Set Automatically. Digital Surge adds: if it's already on, turn it off and on again, then restart the phone. Novaz also warns you when the clock is 15 seconds or more off.

More causes are in Authenticator code not working?

Changing phones

Use the backup key. Digital Surge says it works after a phone is lost, replaced or reset, or after you reinstall your app. On the new iPhone, tap + in Novaz, then Enter key manually, enter "Digital Surge" as the Service and the backup key as the Setup key, exactly as you saved it (Digital Surge). Digital Surge doesn't say how long the key is; Novaz needs at least 16 characters. If you have a Novaz iCloud backup or backup file, restoring it on the new iPhone does the same job without the backup key. See How to transfer your authenticator app to a new iPhone.

If you lose your authenticator and the backup key

Digital Surge lets you switch 2FA off yourself, as long as you can still reach the email address and mobile number on your account (Digital Surge):

  1. Sign in with your email and password. On the verification code screen, select Forgot your authenticator code?
  2. Select Disable 2FA.
  3. Select send code and type the 6-digit code emailed to you.
  4. Select send SMS code and type the 6-digit code texted to you.
  5. On the confirmation screen, select back to login and sign in with your email and password.

Then set up 2FA again from your Profile page. If you had external crypto sends on, disabling 2FA removes that feature, and you'll need to apply for it again after turning 2FA back on. If you've also lost the email address or the mobile number, contact Digital Surge support through Live Chat. Its pages don't say what proof support asks for or how long it takes. See also Lost the phone with your authenticator app?

Official Digital Surge help

More guides: Crypto exchanges and wallets