My kids were beyond excited to be able to use Group FaceTime and I think it will come in handy to talk to all of them at once but none of us can get it to work. I'm trying as I type this. I tap the + then add one name but I can't add anymore than that. I'll type the next name and see the options below but I can't click on them. My kids have the same problems. Are we missing something or is there an issue with it?