Dragon Raja Global

Hi, not that I much care but is very annoying, every time I leave my character AFK for an hour (sometimes longer) I got disconnected and a message appears "You have been disconnected from the server", is there any reason why is it happening to me? Any fix or solution? I didn't submit a ticket knowing it would take GM a while to reply anyway and maybe someone else here had the same problem and found solution for it.

Also, I didn't know if this topic belongs to BUG section or not, if so, please move it.