Authenticator, 2fa, and OTP.

What is this problem? Tell me what you see.

That happens because you have (inadvertantly, or advertantly) instigated a "lost my device" process. You have told the auth platform that you have lost your device, so it no longer accepts codes from the secret that you previously had....because you have told it that you haven't got it. So it is no longer something that you have.

Because you have your username, and email (as authoritative factor), the remedy is to:

1. choose Lost your device?
2. turnstile will send a register device email to your registered email address.
3. Register your authenticator as a device (you can delete the old entry) using this link.

you can now use the newly registered authenticator to generate a valid code that turnstile will accept.

You cannot register multiple devices with turnstile - but you can add (using the qrcode, or the secret) the details to multiple authenticators. The reason I use aegis and mauborgne is because I can register with aegis (on my phone), and later export the one time pad to mauborgne for use on the desktop. Aegis will also allow you to manually retrieve and copy the secret, and it will also display a qrcode to add to another authenticator that supports qrcodes. This is how to use multiple authenticators. Not trying to register them all in turnstile.