Hmm. Weird.
Sorry to answer your other question, I usually just search for the X Files. If it shows it's the US library. If it doesn't, it's the UK one. I'm sure there is a better way but I'm not aware of it.
I'd say so, yes.
Yeah you don't need the app once the profile has been installed. All you need to do is turn the VPN on whenever you want to access the US library.
No idea then. I can't test mine either as I have a crap signal at work.