If your phone number is not linked to your AADHAAR, you will not be able to complete your KYC process. Kindly visit the nearest Aadhaar Enrolment Center or Aadhaar Seva Kendra to get your phone number linked. Do note that it may take some time for the linking process to be completed. Once your phone number is successfully linked to your Aadhaar, you can retry your KYC on Hubble. Simply follow the on-screen instructions in the app. You'll be able to complete your KYC process in no time!