So, the dynamic registration still isn't working, but I use the tablet to set it and I'm okay with that. I also figured out, the state saving and hours issue is FS24, not BlackSquare. If I can get the program to shut down normally it saves the hours, etc, but most of the time it hangs and I have to shut it down through Steam, so no data is saved.
I assume nothing is written to the state.cfg file until FS24 shuts down, is that correct? It would be nice if it wrote when I exited back to the main menu, then I could copy the stage.cfg out and back in before the next flight. Not elegant, but it would work.