why ingame armor name it, example: item.Diamond Chestplate.name ?and why mobs don't move or attack anyone ?
Any more details? Like what did you add to your mod? Is this bug in test environment mode or normal mc?
Also mobs may not move if you didn't set any AI and didn't add any AI tasks
better photos. (facepalm)https://www.youtube.com/watch?v=1Y-CtNZT7bw&feature=youtu.be HD (my firt video)
Click on the cross next to add AI task and let the AI based on remain as spider. I had the same problem when I started with MCreator.
Hope it helps :D