Thank you all very much for your help. I wrote an email to the company on his behalf and explained what happened and they will ship one to him for replacement. He was just freaking out a lot and keep in mind this was his first every mechanical keyboard so I did not want him to have a terrible experience. Although we got J key working , F was an issue and it was such a headache messing with those copper thingies at the back of a switch.
Btw AMAZING customer service from Ergodox EZ , AMAZING. They were very helpful every step of the way and will replace it right away. Honest, the issue was more on the Gateron switches , when you remove a keycap why the eff did the switch come apart? This never happened to me in Cherry switches.