Can't buy tickets for October show, anyone else having an issue? (10 Viewers)

[Vansflyer]

Sorry if this is in the wrong area but not sure where to put otherwise.

We have been trying to purchase two tickets for the show at the NEC and keep getting "discount codes" through email and FB ads.
Click on the link and fill the details in for two tickets on Tuesday (also tried Wednesday) and it just keeps instantly giving us this error. When I say "us" I mean myself and the boss as we have both tried, different computers, browsers and phones including different payment methods.
No phone number to ring or instant chat available so the only way to contact them is DM on FB which gives an auto response and that is it.
Been trying since Saturday and now utterly frustrated...
Anyone else having this issue?
Ta

 

[Gary S]

If you go onto the official site and then enter your code there, it seems to be working.

Just added tickets for Tuesday and looks to be working fine.

 

[Jim]

I spoke to the organisers and they say the ticketing system is working OK, so it might be a local to you issue. Try clearing your browser cookies and cache and having another go.

 

[dunnah01]

I swapped tickets from Friday to Sunday on the See Ticket site this morning with no issues.