Out family tried this. Some of us were able to add the others using the friend codes that Ripple assigns. 2 of us were able to text a couple of times then never again. I am not sure if it was blocked by Royal or not. It does need to run in the foreground at all times in order to use, according to the app. If all members of the family don’t have it running ( and draining battery) at all times, it won’t work. I’m not sure if it stopped working because we have screen locks after a certain number of minutes.
busy1 about Ripple Cruise Communicator