World Of Simulators Platinum Pro Pack DLC Serial Code Not Working!

so i bought world of simulators platinum pro pack online at walmart. i only cared about the trainz simulator one, but when i add the serial code dlc on the dlc voucher page. it didin't worked. and it also says it's already been added by another user... can someone help me how to get it

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The train sim is Rail Cargo Simulator and has nothing to do with Trainz
Graeme

grazlash said:

The train sim is Rail Cargo Simulator and has nothing to do with Trainz
Graeme

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Trainz 2012 is in this pack