My Razer kishi wont work anymore!!

Well Im using my Razer Kishi controller for 4 months already and loved it, but suddenly when I was playing asphalt 9 the left side of the controller won't function anymore (L1,L2, left joystick, d-pad, home button, play button) all of the left side won't work or function anymore I already tried it on other smartphones but still won't work. I don't know how to fix it guys can someone here can help my problem?