I don't understand. I already have authenticator app ticked, and this doesn't appear to be the new default - I have it in the authenticator app already too. If

I don't understand. I already have authenticator app ticked, and this doesn't appear to be the new default - I have it in the authenticator app already too. If I untick SMS, it says this will disable 2FA. What gives? EDIT Looks like a bug. Deleting the phone number gives no such warning, and 2FA continues to work.