My fingers do not work, when asked to place them on finger print device?

i) You can visit the nearest Aadhaar Enrolment Centre to update your biometrics (Aadhaar Enrolment/Update Centre list available is at - https://appointments.uidai.gov.in/easearch and https://bhuvan.nrsc.gov.in/aadhaar/).
ii) You can also do best finger detection to increase your chances of authentication in future by using the best finger identified.