I get open invisible ink messeges
When I get invisible ink messages they come already open with just text under it saying that it was sent with invisible ink.
Try looking at this blog! i had the same problem. i just had to turn my iMessage on and off. http://ios.wonderhowto.com/how-to/message-effects-not-working-ios-10-heres-enabl e-them-0173872/