Sleep talk doesn't work

Hello.
I just spent some coins on TMs and noticed that when I use sleep talk, it just doesn't damage the other pokemon even though it shows in the chat that my pokemon used an attack(it also shows that the pokemon is asleep). Sometimes I can hear the sound of the attack, sometimes no.
Can you fix this ASAP?

Thanks

 

Most attacks/defense are bugged, the staff team is working as hard as they can to fix any bugs.