[Micko123]

For GMX you need host so it can restart server. On your home server you turn on that samp-server.exe program to start server. So if you want to restart it you need to turn it off and then turn it on again.
In host process is similar just it is automatic (it is complexer a bit but this is just to show you how it works).

PS:Unless you don't have this problem on online server on host there is nothing to worry about