Ball ache this morning, got in no problems because the site never shut down, had 2 tickets in the basket, went through to checkout, entered 3 digit pin for my card, clicked confirm and bang, you have no tickets in your basket......
Start again, add different tickets and it says I already have 2 tickets in my basket.... No I haven't!
Tried again 15 mins later so that I made sure the session had timed out and same result.
Left it 40 mins and then it worked......
Oh quite a few pairs in the kop appeared when I was getting them 15 mins ago, so worth checking if you want kop tickets.