Kyrian Path of Ascension

I am currently working on the Kyrian faction Path of Ascension. I have been stuck for four weeks and cannot advance the Sanctum special game. I have not done the nine part questline to get coliseum gear. The questline is simply not on any of the NPC’s. Furthemore, the only soulbind that I can use is Pelegos on the first difficulty. I have gone to Wowhead and watched a video. Still stuck.