FDA's registration and listing: opaque and impossible

I consider myself an "old hand" at registering medical device companies, but I still manage to get myself in trouble. As you probably know, registration must be done on the FDA's website. Recently I tried to register a US subsidiary of a foreign company, and I could not find a way to enter the foreign company's information! Worse, there used to be (albeit in a difficult-to-find place) an email address where one could contact the FDA and get help, but I could not find that anymore! So much for a "customer friendly" and "transparent" FDA.