To better answer your question, True Key does not keep a copy of your fingerprint on our servers like we do for the face recognition keeping a face template.
In the case of the fingerprint, it is your local system that manages the fingerprint, if you are using the fingerprint with Windows Hello I assume you are using it with Windows Hello to login to your system.
While there is no options to reset the fingerprint, you can simply remove the one that in the system and ad it after. I found a quick guide on how to do this with Windows Hello: https://www.tenforums.com/tutorials/9097-add-remove-fingerprint-account-windows-10-a.html
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