Yeelight is unresponsive in alexa app

Hi there. I dont know what exactly happened. But I am so pissed off fixing this issue I got with my yeelight bulb 1s (color). It was working before but at some point now, Whenever I asked alexa to turn off/turn on the light, it always said its not responding. I checked the alexa app to see if my yeelight device is still connected, and it is still connected but it said device is unresponsive. What should i do? I tried disabled/enabled the skill as well as the device in alexa app but same issue occurred. Please help me. I dont know what to do. It was working before with alexa but now its not responding.