Is he delayed in some way? Why can't you say "Brother...There is really excellent site that may give you guidance!!"
He's never been clinically diagnosed as being delayed that I know of, but from dealing with him over the years I'd say that he's not exactly "with it" in many ways. It explains why he hangs out with other people who are delayed, like his current lady friend. I've sent him links to websites that explain what he can do and he writes back and tells me that it was just a bunch of legal codes and stuff he doesn't understand, even though there was nothing like that on the site. It was just a very straightforward article. So I learned that the best thing to do is just tell him everything if it's something important enough. If I tell him how to research something, he just argues that he probably wouldn't be able to find out anything anyway. He gives up on things easily.
FWIW, I sent him an email simply telling him that it's most likely a Guardianship issue and not a POA one, and that he should call the IL Adult Protective Services Hotline, and I gave him the phone number for it. That's about all I can do. He'll probably argue with me, saying that they probably won't do anything. He does that all the time. But at least he now has the tools to do what he
could do.