I'm an American living abroad and have dual-citizenship. The country I selected (and how I verified my address) when signing up to CDC is the one I currently live in. I've been using the app/account without a problem and currently have a Ruby card.
I'm posting here because I just wanted to hear from other Americans living abroad and whether they've had any problems with the app. Deep-down I'm paranoid that I'll get an email one day saying CDC can't service Americans abroad because of reporting laws (like I've read of other exchanges doing) so I just wanted to post here with my concerns.