I too have the problem that I can see the trading post, but I can not buy or sell. It does not load my inventory at the sell screen and the buy button is greyed out.
All other guys in my guild can use the trading post just fine. So what am I doing wrong?
I have done all the firewall stuff etc. suggested here and I am PRETTY SURE that it is not a problem with my firewall (every other thing works like buying gems or ANY OTHER GAME)
Help please.