Face id stopped working and i cant turn off my stolen device protection

Know more --> About Stolen Device Protection for iPhone

See the pic below which is self-explanatory

Probably you have "Always" Ticked in place of "Away from Familiar Location"

For enhanced security, there's a one-hour delay when changing your location settings from "Always" to "Away from Familiar Location." This applies even if you use Face ID for authentication.



A delay will be required when you are not at a familiar location, such as your home or work, to change security settings.

This is happening to me too, it constantly says Face ID required. But it doesn’t recognise my face?! Tried to reset Face ID, won’t let me. Tried to set up an alternative appearance, doesn’t let me. I can’t do anything!