That tutorial is not to create a server. But how to setup Lapper on a (dedicated) LFSServer.
It seems that lapper is connecting to your dedicated server. But it doesnt stay connected.
One of the main issue is the adminpass.
If you know the Adminpass of your dedicated server, then you have to enter in the same adminpass in the default_1.ini file as been said in the tutorial aswell.
Open default_1.ini (LFSLapper directory/Bin/default/default_1.ini)
-Set the Server-AdminPass: $password = "adminpass";