The only think i can think of is that he has you on his ignore (enemies) list, which likely stops you from sending him messages (i really wouldn't know, because i have never ignored anyone, nor noticed that anyone has ignored me) but that would be my only idea.
(hide) If you want to find out more about some games you can check the links section and see if you find any interesting links there. (pauloaguia) (show all tips)