Liberty 2 pro only one side works

Hi guys, can someone help me with this problem? After 6 months, only one side of my ear pods is working, I can’t even turn on the left side. I’ve already tried to charge the charger case with the ear pods inside, but the left side still doesn’t turn on. Is it spoilt? And how can I get a replacement for it? Thanks! , you can contact them here in whatever form that you need.