Bug Command /freexp !

When i joined the game and wrote
/freexp . it didnt work ? and i didnt get 5k xp
and the server told me 
[CSGamers.tk] say /freexp every 11 hour to get 5000 xp for free
and i tried again /freexp
and didnt work 
here is more information
Link : https://www109.zippyshare.com/v/h4KcLEqd/file.html

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