Reseating the Touch ID cable connector is definitely the trickiest part.

Press fit for the connector back into the female connector side doesn’t snap in as it does on the other connectors.

It took me 3 tries before the Home button would acknowledge the Touch ID. Make sure the connector is fully engaged by gently pushing the connector sidewise with the sprudger after you have seated the connector to make sure it is fully engaged. Gently though until it is clear there is resistance and it does not move.

Greetings! The IFixit replacement battery arrived 2 days after I ordered it. The instructions were very clear and the replacement took less than 20 minutes. Thanks for a good product and customer support!