Been trying all of yesterday and today and only managed to get Men of War checked out.
Their "Capsule" software, however, now just sits loading constantly on "Fetching details of your games portfolio..." so I can't actually download it.
GreenManFailing.
EDIT: Seems like it's completely monged out. If I try to buy ARMA II now, it shows that my account has, to trade, a copy of Men of War and TWO copies of ARMA II, and I can't use the free code again. However, if I go to the main page and look at my account, I only have Men of War.
Capsule simply won't load fully to show what I ACTUALLY have.
ULTRA fail.
EDIT 2: Added Tower Bloxx, checked out OK and now all three show on the account. Seems I've got ARMA II twice though in terms of trade-in.