Hello Pompoko,
There is an IC on the Touch ID assembly that is keyed to the board. If the cable is damaged or replaced you will still have home button functionality but will lose touch ID. My guess is it was likely damaged upon removal, they are very sensitive. There is no way to repair this unless the damage can be found on the original home button flex and repaired. If you have a trusted shop nearby that does microsoldering I would reach out to them. It is not, however, a practical repair.
Hope this helps,
Holger