Can't whisper/trader - Invalid query, your account must be in game.

I can't trade or sell or buy anything. Im in game and logged on the trade site. My Merc has hit a wall, i can't get better gear with the drops im getting.

Why can't i use the trade site at all, about all i can do is search. There is nothing out there in the support threads or online I can find to fix this. basically im stuck with terrible gear not progressing at all