Sometimes when I want to connect to my mac using NoMachine, it is not present in the client list. When I walk over to it and hit any key to wake it up from sleep, it then appears in the client list. Also, when I have an open connection to the client and I walk over to the client and use it for a while, the connection to the machine from where I launched the connection (server–also a mac), will go up and down on its own. It drops and then reconnects at a random time later and then drops again. I think the root of all of these problems is that NoMachine is shutting down when the mac sleeps. I had never experienced this before when using older versions of NoMachine and macOS, but now that I have upgraded my macOS and upgraded my version of NoMachine and now I have these sleep-related connectivity issues. Does anyone know how to fix these problems? Thanks so much for your help.