Dragon Slayer Xin Zhao no sound effects

The dragon slayer Xin Zhao skin does not have any sound effects as of 2 weeks ago, whenever he recalls there is no sound and whenever he uses his ability there is no sound with the dragon slayer skin, only the sound from the classic skin is heard. Look into this problem because i don't want my money to be spent in vain. It really off-puts the dragon slayer skin and there is no thrill in playing with him.

Thanks.