Face ID not working

If your Face ID is not working, see this, If Face ID isn't working on your iPhone or iPad Pro - Apple Support and this If an alert says Face ID has been disabled on your iPhone or iPad Pro - Apple Support. If neither help, then use the Get Support link at the top of the page here to contact Apple Support for service, or make a Genius Bar appointment at your nearest Apple Store. 

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See: If Face ID isn't working on your iPhone or iPad Pro - Apple Support.

Jack

My Face ID worked just fine until iPadOS 15. Now it works maybe 50% of the time. Your "If Face ID isn't working on your iPhone or iPad Pro" suggestions don't work. Please fix.