Face ID doesn’t work - keeps saying move higher/lower

That sounds like a hardware issue, you should book a Genius bar appointment to have a diagnostic run on your iPhone: https://www.apple.com/retail/geniusbar/

Are you using a screen protector that can obstruct (interfere with) the true depth front tamera in the notch of your iPhone X? Should be this case, try to remove it and restart your device, then test it again.

Regards

Giulio

If you still need help, reset Face ID, then set it up again. Go to Settings > Face ID & Passcode and tap Reset Face ID. Then tap Set up Face ID to set it up again. If you can't enroll your face, take your device to an Apple Retail Store or Apple Authorized Service Provider or contact Apple Support.

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

Well, if nothing has changed, contact Apple Support using this link:--> Get Support

(they have tools to run remote diagnostics).

Regards

Giulio

I got pushed a new update that was supposed to go tonight. I ran it this am and now my Face ID works again. Able to set it up without issue.

Same. It just stopped working this morning. Tried going through the reset process but had the same issue with saying move phone lower but camera would never recognize my face and move through setup. No screen cover on camera.

You are welcome

So now I’m on 13.6.

It said the update I ran had bug fixes. Not specific to Face ID. I did the support chat and they ran a scan on my phone and suggested this as the fix.