[Aerogear-users] Register and Alias

Now that everything is running smoothly I have a couple of questions regarding register. Does register need to be called each time the app starts up? Why isn't the alias at the server updated with the alias supplied during subsequent register calls from the same installed app? I would like to have the most current email address used as an alias but changing it after the initial register has no effect on the device listings. Thanks for everyone's help.