Geeetech

Upon disconnecting the Z stop wiring I found the harness disconnected from the motherboard! How do I repair this? The third screw is under the carriage.

Just purchased a 3dtouch sensor but there are no installation instructions. Where can I find information on installing and connecting it as well as how and where it connects electrically?
Finding information on the A10M seems to be very difficult, why is it so secret?

Whenever you "auto home" the hot end chatters in the bottom left corner. cannot proceed. cannot print, please advise fix.[ This is a new A10M