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Novaz AuthenticatorGET

G2A 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. Find the setting
  2. Add G2A to Novaz
  3. No documented backup codes
  4. When G2A asks for a code
  5. If G2A rejects your code
  6. Changing phones
  7. If you lose your authenticator
  8. Official G2A help

Your G2A account is the one you use to buy and sell game keys, gift cards and software on the G2A.COM marketplace. G2A calls its two-factor sign-in 2-step authentication. Its help recommends turning it on, without making it a requirement for anything, and names one method: the Google Authenticator app (G2A). Google Authenticator makes standard time-based codes, so another authenticator app can normally stand in for it. This guide uses Authenticator App - Novaz on iPhone, and any authenticator app works the same way.

How we checked this guide: the G2A details come from G2A's own Support Hub, linked below. The Support Hub turned away our automated reader, so on October 20, 2026 we read saved copies of its articles on web.archive.org, including their screenshots. Those copies date from 2022 to 2025. G2A's main article on this topic had no saved text at all, so G2A's setup screen after the Turn on button isn't covered here. We haven't tested the steps on a G2A account, so a label may differ. The Novaz steps are checked against the app, version 1.0.5.

Find the setting

Two G2A screenshots, from 2023 and 2024, show the way (G2A, G2A):

  1. Sign in to G2A.COM and open Account Settings in your G2A dashboard.
  2. In the Security settings box, choose 2-step authentication. Until you set it up, the row reads Google Authenticator with the status Off.
  3. On the 2-step authentication page, select Turn on next to Google Authenticator.

A 2022 version of G2A's account-settings article shows an older layout, where the same page was a tab called 2-Step Authentication under Account details. That version also says you may need to add a phone number before turning on two-factor sign-in, and that some phone carriers aren't supported (G2A).

Add G2A to Novaz

What G2A shows after Turn on isn't in any page we could read, so we can't say whether it offers a text key or what it calls one. Use whichever of these matches your screen:

  • A QR code: in Novaz, tap +, then Scan QR code, and point the camera at it. If the code is on the same iPhone, take a screenshot, tap +, then Choose a photo. See scanning a QR code on the same iPhone.
  • A text key: tap +, then Enter key manually. Type G2A as the Service, your email as the Account if you want, and the key as the Setup key. See What is a 2FA setup key?
  • A box for a code: type the code Novaz is showing for G2A before it changes.

Scan the QR code when you can. G2A doesn't publish its code settings, and a QR code carries them into Novaz. A key typed by hand always gives 6-digit codes that change every 30 seconds.

No documented backup codes

None of G2A's pages we could read mention backup or recovery codes. That matters with Novaz, because its keys stay only on your iPhone unless you turn on iCloud backup or export a backup file. If G2A offers backup codes during setup, keep them away from your phone, in a password manager or on paper. If it doesn't, G2A Support is your way back in.

When G2A asks for a code

G2A's help says the codes are needed when you sign in (G2A). The 2022 article adds that after a 2-step check you can mark a device as trusted, so it isn't asked again there, and manage those devices under Authorized devices (G2A). The newer dashboard screenshot doesn't show that menu, so it may have moved or been renamed.

If G2A rejects your code

G2A's help doesn't cover rejected codes. Start with your iPhone's clock: open Settings > General > Date & Time and turn on Set Automatically. Novaz also warns you when the clock is 15 seconds or more off. Other causes are in Authenticator code not working?

Changing phones

G2A doesn't explain how to move 2-step authentication to a new phone or how to turn it off. With a Novaz iCloud backup or backup file, you can restore G2A on the new iPhone; without one, the new phone needs G2A set up again. Keep the old iPhone working until you've signed in with a code from the new one. See How to transfer your authenticator app to a new iPhone.

If you lose your authenticator

G2A's readable help has no recovery steps for a lost authenticator, and doesn't say what proof it asks for or how long it takes. Its contact article, saved in October 2025, sends you to the Tickets tab of G2A's Support Center. Choose Account Features (Password/deletion), the category for sign-in problems, and describe the problem in detail. G2A emails you to confirm the ticket, reply times depend on how busy Support is, and repeat tickets about the same issue get closed, so send just one (G2A). The article assumes you can sign in, and doesn't say what to do if you can't. More in Lost the phone with your authenticator app?

Official G2A help

More guides: Shopping and tickets