I'm just going to put it out there...
Gamemaker 5 needs to lookup the definition of idle mechanics and then remove that tag.
try to collect keys and use 12 diffrent colors and 12 hats, but actual collecting keys is idle, (in level rounds, visible when get a key, open chest get them from Levels) it is updated here on this LInk, try again and dont you think? https://gamemaker5.itch.io/loady-dungeon-unity3d-team-gamemakers-webgl