For the main Winter Festival Quests, when you are required to go and speak with the man outside of the cave by Nomad’s Hut, it says that the quest is already completed and there is no man standing there to speak with.
I tried logging out/quitting the game and logging back in. The man is still not there. In the Journal, it states the quest is already completed to I went back to the Main Quest Giver outside of Highsteppe and he will no longer respond. I hope there is a fix for this soon. I really want to help my friends finish and go on with killing the Boss in Crystal Cave.
** Therefore, it is impossible to go past Quest 3 of the Winter Festival. B( **