Thanks, folks, for your comments and pointers.
There's a more fundamental problem here, and if anyone is at fault (though I don't believe anyone really is) it's me.
[[There have been times in the past couple of decades when family & colleagues have leaned on my for help with PC/Windows issues, and I'm generally able to help. I think this is because I have had a conceptual framework of computer h/w and s/w which was wide enough and deep enough to be able to come up with a list of potential underlying causes, ways to determine which is most likely, and some idea of where in the Windows interface to go for a fix. All of this is just to say that I'm not totally ignorant about computers - but only at a certain level.]]
With FAH I have a very shallow and narrow view of how things work. When an issue arises, this results in two problem types:
1. if I cannot see something in the web interface that looks like it is related to the issue, I'm stuck.
2. When the immensely helpful folks here identify the likely cause, for example: "You don’t see machine 2 because it is not connected to the api and/or node servers.", I have no clue how to check and fix that.
When I try reading the docs, or googling things like "fah connect machine to api", the results are of little or no help - I simply do not understand enough for me to do whatever it is that needs to be done.
I checked the log of machine 2 for errors, and sure enough there are some, like "Failed response: CONNECT", or "Failed response: EOF". But neither of these messages tells me what, if anything, I'm supposed to do.
As far as the client running goes, does the fact that both machines are actually processing work units not mean that the client is running? In any case, to verify if the client is running, I checked in Task Manager, and see that FAHClient.exe is in Running status on both machines.
In the end, I apologise for wasting people's time. As the thread subject says, it's not a real problem, and I was just hoping that there was a fix that was quick, and easy, and within my understanding. I should just be happy that I have two machines contributing something to the project - Rank is now 124,701 - so look out, muziqas, I'm creeping up the ladder
