Dear Samsung Member,
Greetings from Samsung Customer Support!
Please be assured and to resolve "Fingerprint issue " kindly follow the given below steps:-
1) kindly try to re-register your fingerprint after removing it by following these steps.
Disable fingerprint register a new fingerprint:-Settings>> Bio metric and security>>Fingerprints>Continue>>Set secure screen lock>>Start with center.
2) If you bend your finger or use a fingertip, the device may not recognize your fingerprints. Press the fingertip so that your fingertip spreads over the wide surface of the fingerprint recognition area.
If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question).
Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.
Thank you for writing to Samsung.
Samsung Customer Support