I'm from Australia, and recently used their online ordering to get a pickguard in.
No problems at all, just clicked on the International Order, selected the options I wanted on the pickguard, submitted my details and a couple of weeks later it turned up in Australia. Order was 100% correct, and a pickguard is something you can mess up an order on.
I registered beforehand as an Account. Is this what is causing you the problem?
More details so we can understand what your problems are, please.