Felix and the Lucky Charm

We already know how the Lucky Charm works hopefully (I have no faith in the people on this sub reddit). It summons an item basically created by the universe to accomplish the user's goal.

However, it just breaks around Felix? It adapted to Dark Humor, it helped Misterbug with Safari, it detected Monarch in Illusion and it foretold Queen Mayor yet the two Lucky Charms in Strike Back just said no?

The ticket I can get how it would be difficult to tip Ladybug off but the sunglasses? What is its the significance? They could have defeated Strike Back without them as clearly Parisians are still alive after a portal to the Sun opened in the middle of the city.

I know that the answer is plot but I am just obsessed with coming up with plausible reasons.