i did get "A monster has been added to your collection" in the chat but it not registered to the monster book, it only registered to the crusader codex. I farmed almost 1 hour still didnt get registered is the chanced of getting registered is low?
What monster is this? If it said it was added to your collection, then it should've been added to your monster collection. It's random so the chance could be low, but it might be also be an elite monster that's required?