Hi jj. I haven't attempted this, But I have had a quick look. The page layout looks a little different to what I remember.
I have noticed a :
'You need to register once and then sign in to theguardian.com to enter our online competition for a £100 monthly prize.
Click here to register.'
Just after the preamble, Just checking if you have already done that (Or has it been there for some time) Just a thought :-)