Yeah that makes no sense at all. It has nothing to do with a network, its all on them. I can be 1000 miles away and my devices at home still get messages forwarded. I'm sorry, hopefully iOS 10.3.3 will come with some documentation from Apple.They did and I was going back n forth with a guy who was in contact with the engineers and when they told me to try another network i just gave up. It's BS, I dont even think they know whats going on.