Interesting, it looks like you can only get your own data, if you have an American postal address. So if you moved abroad (or never lived there), you can not get your data, even if they have it.
There are mail-receiving companies that you can use. You can easily get your data if all you need is an American postal address.
Reason number xxx that I never plan to return permanently. The longer I'm away the more bonkers things seem there.