Every character has a TeamIndex, so that we know if it is a potential friend or an enemy.
If your enemy is not attacking, there are mostly one of the two things wrong:
TeamIndex - 0 is the Index of the player team. You can edit the TeamIndex in the enemy blueprint or directly in the enemy in your scene.Example for the enemy blueprint

Example for the <u>enemy in the scene</u>

The other thing that often happens - you forgot to add a Nav Mesh Bounds Volume that is needed that your AI can move around.
