viagogo

Being a Blue Member, I missed out on tickets for the derby, and when this usually happens I turn to the ticket exchange site known as viagogo, I found 2 tickets in the family stand, it says 1 adult and 1 u16. I'm hopfully going with my old man so like before when I've purchased tickets off here I presume they will just both be classed as an adult ticket when I purchase them. This has been the case when I bought an adult and an u16 for the arsenal match last year and did the same for the Newcastle match this year, they were both just adult tickets when I picked them up from the ticket office. This time however I rang the club as it wasn't letting me buy them and they informed me that it was because I wasn't taking an u16 and if you sit in the family stand you have to take an u16??! has anyone else had trouble with this?? sorry for the long post