Quick question about the zakum quest

I guess I can go in then, cause I went to the Zakum entrance on my Dawn Warrior (no quests completed) when I clicked up on the portal it said I need to finish all 3 levels to enter, and it doesn't say that on my Cleric, so I guess I'm fine. Also, is ch3 Zakum glitched or something? It says you can only summon it in ch3/4/5, but at ch3 it says the same message. o_o At least in Bera it says that.