I don't think that's the issue. I have tried a few times over the last week or so and keep getting the same result. I would know in a heartbeat if the panel was not communicating on the LAN, as I have a 24x7 screen display of my IntelliCenter DashPanel on my rp monitor, so that's not it.I've had that "Can't connect to requested pool" message before and when I tried later (w/o changing anything) it worked. Just make sure that your panel is still connected to the internet and that you can access it from the web portal.
I might have to explore HA in greater detail later as I'm aware that several who are running the Node.js poolcontroller-dashpanel are also integrating with HA. Wonder if that means running a second RP just dedicated to the HA effort. . Others' here have said, "you can never have too many RP's" lol...For those that are into tinkering and are already using Home Assistant, you can create an Amazon Alexa Custom Skill and hook into the IntelliCenter using code supplied by member @Gibby13.
Have you found that sometimes you have to make multiple requests to get data? Sometimes it works on the first request, sometimes it takes a re-send of the request. Ryanwww.troublefreepool.com