Why it's always offline?

It’s offline randomly, even when I can open it from local network. Is anybody works on it or not? Why software is so bad and nobody care?

There are many factors due to which My Cloud lost connection with My Cloud server and behave as offline. You can follow the instructions provided in below mentioned article in this concern:

https://support.wdc.com/knowledgebase/answer.aspx?ID=15181