hi i usually purchase from dispensetf shops.
However today when i was going to purchase a game (black flag) they keep asking me to sign in.
Thing is i am already signed in but i am not seeing the proceed sign,
When i click sign in and i do sign in the page refeshes but the sign in to steam sign does not go away.
Help please. as i am not able to proceed to buy the game

http://dispenser.tf/trade/101678/ this is the game i am trying to purchase if it helps. It keeps telling me to log in to steam even tho i am logged in. (and yes i logged in over and over to see if it goes away but no :'( )