The page on which you enter your code, although it appears to be part of the U2.com site, is on the ticketmaster.co.uk server. Once you've entered your code you'll be taken to the ticketnet.fr site. The problems that I had getting Brussels tickets last week were all on the first page - caught up in the logjam for the UK presale. Once I was past that page and onto the Teleticketservice site, everything went totally smoothly. This means that if you have problems with your code for the European presales, you'll need to contact Ticketmaster.co.uk, not Ticketnet or whoever.