Make privacy lock support facetime
Having FaceTime as a way to unlock the app Can be useful as a way to make this sometimes desired configuration be less inconvenient. Having to enter a password all the time can make this a bit more tedious and yes I’m aware of the option to make password not needed for a determined account of time however that defeats the purpose of wanting to lock the app in the first place. With facetime, the lock could remain in place at all times given how fast and seamless authentication usually is.
The Privacy Lock supports Face ID for unlocking the app. Sounds like it might just be disabled in the Settings app. If you don’t see the Face ID option, try disabling Privacy Lock and setting it up again. You should get a prompt to allow Face ID access.
Best of luck with all your goals & habits!
Kyle