Touch Id / reachability

Hi , so my iphone 6s stopped from charging , i took him to a 3rd part repair and told me the problem was the charging circuit dead.

They replaced it with a new one on the motherboard and the iphone was back to charge :D but after that the touch Id and reachability wont work , they didn’t change the home button.

A restore didn’t solve the problem and no error in the insertion of a fingerprint just is stay waiting me to put my thumb and nothing is happening also reachability don’t work.

Can you help me please I’m confused :/