HIi LG, was having heaps of issues with their site yesterday too. Unfortunately technology can be fickle, and they probably don't have many IT people working over Easter. If you log in first and don't use saved card details it's a bit more reliable, but definitely required a lot of patience from me. You're definitely not getting charged, so while their system is pants you're at least not getting ripped off, silver lining?
Oops! Looks like I'm also having issues, replying to old posts too late!