Seemed to sort itself out for me after a few days, although admittedly I did give the Ubisoft support Twitter folk a nudge. On a completely unrelated note, my mail server bounced the notification email I should have received when you replied to my post because it's being sent from an address with an invalid .onbe TLD:
The forum sysadmins should probably fix that.
onbe is not a valid TLD
1 P firstname.lastname@example.org 22:25:18 mdc-onl-mail-out01.ubisoft.com[126.96.36.199] mdc-onl-mail-out01.ubisoft.com