U-Bolt Pro + Bridge -- fingerprint scanner doesn't work now

[Ma1]

I purchased an ULTRALOQ U-Bolt Pro Smart Lock + Bridge WiFi Adaptor in 2021 for $200. Now, in Jan. 2024, the fingerprint scanner stops working. I can only open the lock by entering code.

How to fix it?

[Logan]

@Ma1 Please check your updated request #187994