ya, that is the mistake from HTC....They pre-installed the wrong version on several models. As I know WorldCard Mobile has only one version and it is exactly the same with "test only". So no worry and just keep using it!
Just check the website, WorldCard Mobile is released for iphone, too. So iphone user can have it now...
http://worldcard.penpowerinc.com/wor...le-iPhone.html