1. Currently, an app device with its name modified is valid only after it is re-bound to Action. However, you may redefine the name of many devices or an individual device through the room and nickname provided by Google Home, so as to take control.
2. A few names may not be well recognized by Google, and in such cases, you may modify the device name and try again.
3. If the problem still remains after excluding the above issues, please provide us with relevant information (Google account, app name, app account, app password, Action name, device ID, approximate time of occurrence), and we are sincerely at your service.