Disregard that last post, it finally worked on the umpteenth time. See you on the track.

So, I buy S2, the master server goes down and now it's refusing to let me unlock it, saying "Welcome to Live For Speed demo" every time I try.

I got the "username not found" a couple of times but now it's back to just failing to connect.

Great. I finally get around to buying LFS S2 only for the master server to go down 20 seconds later.
Oh well.