Aha, I think that's the problem - you need to then win the encounter after you use the lures. Attack (or Tease) until one more use will win you the battle, use five lures, then Attack (or Tease) to win the battle.
The enemies not having pictures yet is intentional - Hyao is slowly adding them as Zoroj and Gavel work on them. So the pictures you're missing are pictures everyone is missing right now.