I have a BW premium account secured with Yubikey 5C NFC, both for FIDO2 WebAuth and for OTP (besides Twilio Authy for TOTP).
It works fine in the browser (Firefox) but it does not ask for 2FA (of any kind) on my Android 10 Smartphone (with NFC).
I checked the “One of my keys supports NFC” in the 2FA section of the web vault. I completely log out and re-entered the Android app.
No way: the Android app always enters me straight to the vault after fingerprint recognition or PIN entering, without asking for 2FA key.
Is 2FA not supported on phones?