Changing WiFi

Hi

I have changed my WiFi and now am struggling to use this app again or change my settings so that it connects to the new WIFI. Please help with this

I went through this with my Sonoff S31(s). First make sure your phone is on the new wifi (SSID/IP address range). Then reload each device by re-pairing it again. The first few are slow but after that it went really smooth for me.