I can't open the portal for Nyx. I put in the correct gems for GPG (green purple green) as it says to but I just get told it doesn't work like that.
Needs to be time 18:00 too like it says in the quest log.
Yes, I do it at that correct time and it still does not work. Should have mentioned that in the first place.
Try making a new game, select start from act 2, head for the portal room the same day and try. If that works you probably overlooked something in your other game