Those logs weren't in your first post. Did you do something to cause a change? Anything that changes
the symptoms is a clue.
In your first post I noticed it detected all 4 boards but they seem to have failed to respond. You could try
removing one board to see if the logs change. That might identify a connectivity issue.
Another thought is to call up old customers, they might be able to help.
I hate repeating myself.
Don't expect a miracle, there's a limit to how much troubleshooting you can do without swapping parts.
At best you might get a clue as to which part you may want to replace first.