Yeelight cant connect to wifi after reset the lamp

Hello, im using led bulb (color) before i update my yeelight application on ios it works normal, after i updated the lamp appear offline, and then i try to reset the lamp and try to connect again via yeelight application, but then my home wifi not appearing on yeelight application eventhough my handphone is connected to wifi, what should i do?

Please install our latest Yeelight iOS app and make sure Yeelight have location service permission.