Touch ID disappeared in Notes

I use iPhone 6s with software version 12.3.1. I used to be able to open a locked note in Notes with Touch ID, but this option doesn’t appear anymore. Instead, a password prompt appears.

But the phone doesn’t recognize the password, despite the hint. Using Reset in Settings only works for future notes to be locked. Would the same apply if I deleted my current Touch ID and started a new one? What can I do?