Update. This morning is two weeks after I posted here, and "magically" the announcements started working again. Based on another thread in these forums, I did call Amazon (2 weeks ago) and go through the pain of getting to a human and "filing a case", but I cannot know whether they finally got around to it or if something else on their end simply refreshed. I guess it's good confirmation that there was never a problem with the ISY Portal or my ISY, but it's also frustrating that this could happen at all.
Thanks to everyone who helped me here, contributed to previous discussions, and even read this thread!
