To fix the fingerprint issue kindly follow the below mention troubleshooting steps to resolve it:
1. Kindly remove the fingerprint password.
2. Reset all system settings.
3. Clear the sensor part with a clean dry cloth.
4. Again set up a new password.
5. Don't use a wet finger or finger with oil/dirt/peeling.
We hope this will help you. Further, if the issue persists kindly let us know.