This happens because the wemo cloud compares the wan ip address of the request with the wan ip address of the wemo device. Like many people i ran into problems with my wemo switch so i tried disconnecting and reconnecting it to my home app.
Wemo Apps On Google Play
Wemo not working with google home. Setup is not working properly. Reset or restore your wemo device to factory default settings. Uninstall and reinstall the wemo app then repeat the setup process. To know how click here. According to their community forum and when i search twitter for at wemo lots of people have had this problem. To control your devices say okay google.
Open the google home app and go to settings personal info home work. What if you need home automation thats even easier. But what if your fingertips are busy. Open the google home app and go to settings routines good morning and make sure tell me about the weather is checked. Link your wemo devices to a google assistant enabled device and ask google to control your lights and appliances. Turn onoff my device name you can also assign wemo devices to a room in the google homegoogle assistant app to control together.
Now my wemo wont even connect to google home just throws errors. Google home still works for the philips hue lights. Using google home to control my wemo switches just recently within the last few hours stopped working though the google home responds as though it is performing the action. In this particular case google vpn is blocking and preventing linking. Disable the vpn service to enable linking to google home. Wemo screwed up no longer working with google home.
Close all apps that are running in the background then re open the app. And alexa can still control all of the wemo switches. Sure wemo is home automation made easy putting control of your household lights and small appliances at your fingertips. Everything appears fine in both the google home and wemo apps. For setup instructions click here.