I just set it up as a test and it works. see screenshot I used Google Authenticator.

From the below page, which step are you having an issue with. Post a screenshot. https://support.mozilla.org/en-US/kb/secure-firefox-account-two-step-authentication

Does the app use the correct time/timezone as that is the most likely reason that the TOTP code is wrong?

• https://support.mozilla.org/en-US/kb/what-if-im-locked-out-two-step-authentication

I checked the time/timezone on each device and they are accurate.

here are screen shots. after i scan the qr code generated, i enter the auth code but keep getting denied. i am using ente auth. i previously used authy with success but was locked out and discontinued using authy. screen shots attached.

Try to compare the generated code with this extension:

• https://addons.mozilla.org/firefox/addon/auth-helper/

i have to be doing something wrong. admittedly i am a novice (but eager to learn) so it's gotta be me missing a step. check out the screen shots. i do appreciate the time you have taken to give suggestions. i'll give it more more thought/tinkering tomorrow.

What is this from? see screenshot

I am experiencing the exact same issue, which I posted here: [https://support.mozilla.org/en-US/que.../1480285]

I'm able to complete 2FA setup using the Firefox authenticator add-on but not with a one of the recommended third party apps.

The add-on is fine for us on one device but not if I intend to log on to my FF account elsewhere. I would need a third party app.

I've also checked my time and timezone settings on all devices and as far as I'm aware, they are all aligned.

I must be missing something!

If it doesn't work on the mobile device then this would suggest that the time on this device isn't correct. Maybe try a different internet time service to see if that makes a difference. I assume that they both show different TOTP codes?