Hi Dear,Can you tell us the specific model? Let's check

Your device has been added to our database,Pls try to re-add it via searching Brand：Yamaha Model： TSR-7850.

Sorry for the inconvenience Please try to assign Power On, Power Off keys.

Power On，power off.

Your device has been added to our database,Pls try to re-add it via searching Denon Model： AVR-1906.

About creating an activity, I sent you a video that I hope can help you. https://www.youtube.com/watch?v=TFUja-P0TAM

Thank you for your suggestion. We will feed back to our R&D department to evaluate the feasibility and consider whether to add it in the next update.

Can you tell us the specific model? Let's check it.

If the device cannot be searched after the network is configured, it may be that WiFi is being upgraded. After the distribution network, please kill the app first, and then do not enter the app. Plug in and unplug the hub power again. Wait 5-10 minutes before entering the app to upgrade the WiFi firmware, because after the distribution network is connected to the Internet, go back to the server to pull the latest WiFi firmware.

Hi Dear,The following points are required to use Alexa: 1. The wifi connected to X1 Hub needs to be connected to the Internet before the Hub can upload the device information to the cloud. 2. Search sofabaton in SKILL in Alexa app, and log in to sofabaton account, which is the same as X1 distribution network . 3. After login, the account signal will be synchronized automatically. View the sensors on the device page to view all synchronization scenarios .