For some weird reason I cannot remove the SmartApp for the WeMo or a single Wemo Switch. I am able to remove other versions of the wemo smartapp and the associated switches but I have one version that I cannot remove.
I have tried updating the code in the api. I have tried removing the app via the iphone app. I have tried removing the app and device at https://graph.api.smartthings.com/device/list. But it keeps stating failed. Any ideas would be appreciated.
I had the same issue. I was able to remove it after taking the Wemo (it was an outlet, not a switch) out of every routine and smart app and then manually deleting it from the web interface.
Then I added it back and haven’t had any problems since!