Does klutz prevent lopunny from mega-evolving?

Hello there, I am currently running an random + nuzlock run of insurgence and just managed to get a lopunny and it’s mega-gems but i can’t mega-evolve the bunny in question. I am aware of the fact that klutz should not interfere with the méga-evolution but here i am… the pokemon in question is level 70 and I’m about to get to the darkrai arc of the game so i don’t understand why it’s not working.
Please save me.

Maybe double check the mega stone? It might be the delta one.

Checked already and it was really the loppunyte