Originally Posted by konagirl2

As far as my conversations with customer service went, there is no way to re-initiate the authentication app via BA or to change the method between SMS and authentication app

I found I had taken a screenshot of the QR code when I first was asked to setup 2fa on my old phone, and that QR code still works (the link the BA send from [email protected] had expired).

When your wife tries to login, in the options below authenticator OTP in blue, can she see 'use fingerprint or facial recognition'? That should be stored/authenticated by the device.