Ipad Home Button Doesnt Work When Charging. Its best to use the power adapter and cable that came with your. Its possible the screen isnt exactly in the same place it was put at the factory when you took it off and put in back on.
Simultaneously press and hold the Home button and the power button until the Apple logo appears on the screen. So make sure the charging cable and USB adapter are not damaged. On the iPad or iDevice press and hold the Home button and attach the lightning cable AT THE SAME TIME Press the Home button until you see Connect to iTunesFinder screen on your iPad OR until iTunesFinder detects your iDevice.
You need to speak to Apple to repair this.
If your iPad Pro is still not charging properly it must be due to a hardware fault. Press and hold the Top button until your device begins to restart. Continue holding the Top button until your device goes into recovery mode. Since you have to take it apart again you could remove the screen remove the button from the screen and just put the button on the area on the iPad where it should sit and see if you can get a response out of it.