Why Are Viagogo Not Selling Robbie Tickets For Paris?

[Bean99]

Tickets for all the Robbie Williams gigs in Europe next Spring are listed by Viagogo - hundreds of tickets on sale, but none at all for Paris for the three days at the end of March. My guess is that the venue, Zenith, is in a dodgy area outside the main city, and ID will be required to match the ticket. So if you are not the original buyer you may be turned away? I emailed Viagogo but didn't get a proper answer.
Anyone got a clue on this?
Please don't suggest other sites where the Paris gigs are on sale, the question about getting in would still apply

[Buenchico]

I can think of two reasons why Viagogo might not be offering such tickets.

Firstly, they've had lots of problems with French courts ruling against their activities . e.g.:http://www.e-comlaw.com/world-sports-law-report/article_template.asp?ID=1664

Secondly, tickets still seem to be on offer (at face value, for the additional concert dates of 31/03 and 01/04) from RW's official seller, Ticketmaster:
http://www.ticketmaster.fr/fr/resultat/idtier/15425040?ipSearch=Robbie%20Williams

[Buenchico]

Oops! I screwed up that first link:
http://www.e-comlaw.com/world-sports-law-report/article_template.asp?ID=1664