I recently set up 2 Factor Authentication and your instructions for setting this up do not seem right to me. You say that the QR code can only be read by Google Authenticator but this is not correct. You are using the TOTP protocol which means that any compatible authentication app (eg Microsoft Authenticator, Authy, LastPass etc etc) can be used. I have tested and it works fine with my preferred app.
To avoid confusing people and having them download Google Authenticator unnecessarily if they already have a compatible app, can I suggest that the instructions and support page are updated?