Touching Screen Not Working Apple Watch Series 2

Chosen Solution

I replaced the Screen and Digitizer but It doesn’t respond to touch on the screen to switch through apps or power it off

You likely need to replace the touch gasket as you often damage it in the process of taking the display off. Apple Watch (38 mm Series 2 & Series 3 Cellular) Force Touch Sensor Adhesive GasketApple Watch (42 mm Series 2 & Series 3 Cellular) Force Touch Sensor Adhesive Gasket