I went through all the steps and have 2 different seeds (Corruption and Darkness), I properly went through both NPC doors and clicked on them to proceed further (near the egg and after boss fight later). I'm stucked at Stage 8 where I must follow the trails to the seeds of darkness and destroy them, then report back to Heliorion. I have the helmet, two seeds in my inventory, I defeated the boss and nothing. He won't answer me anything but to go elsewhere and do what he wrote in my questbook. I switched my class/server/eu to wc server/reinstalled the client/played on 1.12.2/rerun the quest locations (have 4 and 5 seeds), I feel I can waste no more time trying anything so here I post it.