So I got all of the codex pages I went to give them to Hytham and the option was grey so I checked my inventory and Number 3 was gone after I got it, so I went back to Jorvik back into the assassin bureau and it was there on the desk in the corner I tried to pick it up again but the option wasn't there and I couldn't pick it up. So I went back to Hytham to see if I could give him the pages since I know I got all of them and It wouldn't let me give them to him because I was missing Number 3 after I got it, I'm 60 hours in and I don't want to restart the game is there anything I can do?