My detachable keyboard not working even after bought a new one.

It being year since i bought the new dell xps 12 after one month keyboard stop working suddenly i did everything but no luck then I bought new keyboard and still the same problem it's not detected it at all

in the first i thought it's software issue but after formating and rest the" bios "it's could be a hardware issue..

Know I end up to conclusion it's maybe the ribbon cable the having the pins to detached with keyboard is not working

I found a new one in ebay or Walmart should I buy it or maybe its not the problem ?