My code is working find but cant send data to Network but another computer it does, why is this?

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Hello all,

I was developing a project using lmic library , arduino ide, TTGO TBEAM and loadcell. It was working fine, about 5 months. And then i just revised my code to work little bit stabilise. Arduino ide uploaded the code, but i could not see any data in my Lorawan network. I tried to work with another devices and they also did the same thing.

Then i realised, my code works fine in my coworkers computer.

So, can you please tell me what is the problem with it?