意思是：为什么成天都在重发。至于重发什么，就问你自己了

我也不懂广东话。。。

这是广东话哈，我听了楼上两位的解释后才懂其意。 Actually I guess so.

why are you just sending the same message all day ?

it means"why are you replaying files multiple times (repeating) all the time"or "why are you send the message again and again " 點解means why. 成日means all day 重發means send the message again and again