Remove all passwords and delete all finger prints before starting.
1) aftermarket home buttons will NOT have touch I'd, Touch I'd will only work on the original home button.
2) ALWAYS DISCONNECT THE BATTERY before disconnecting anything else.
3) Discharge the main board after disconnecting the battery by pushing and holding the power button
4) Remove the screen
5) Use extreme caution when disconnecting the home button connector
6) Use heat on the front of the screen around the home button area. If you cannot touch the screen you are using too much heat.
7) VERY GENTLY remove the home button.
8) Watching very carefully and using extreme caution lift under the metal plate under the home button flex connector.
9) Finish your screen swap.
I follow these steps EVERY time and by experience or by luck, I haven't had anymore Touch ID issues.
I hope this helps.