Turn on two factor authentication to use continuity camera

I have been through the exact same problem this steps worked for me, first sign out of your iCloud account on your Mac then sign in again. Reset NVRAM by shutting down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. You can release the keys after about 20 seconds, during which your Mac might appear to restart. Log in to your Mac and try using continuity camera.

ref: Use Continuity Camera on your Mac - Apple Support

Sorry leroydouglas, the article you linked to doesn't answer the question. The problem is 2 factor authentication is already on, but still getting an alert to turn it on. So I'm (and Banananannanana) are stuck in a loop.

Slightly off thread - I wish to use Cont. Camera (CC) when travelling in the country. I will have WiFi but no internet or mobile phone signal. Is there any way of using CC without Two Factor Auth. (TFA) as, of course, TFA won't work without signal.

Why on earth is TFA forced on us by Apple for CC? TFA is not needed and I can't generally use it anyway.

(P.S. Yes, I know I can use Airdrop with just WiFi but CC would be more useful. Oh, and why does CC need TFA but not Airdrop????? Inconsistency from Apple yet again)

Thank you. This solution worked with my iPhone 6 running OS 12 and Macbook Pro 2017 - 15 inch running Mojave.