When I used roam on my iPhone, I didn’t enter anything on the app until we were actually in US waters on our cat. I thought about playing with the app while in Ohio but thought it best to wait until I was actually there. The app was simple to use, just followed instructions until it started processing. The app tells you when processing, waiting for an agent to review it, when an agent is looking it over and finally when you have been accepted. You shouldn’t have any problems.