Whether you can use a keyboard, mouse, or controller needs to be checked for your device and game. Not every Bluetooth or USB device is compatible.
Connect your control device and test it. If it isn't detected, note the device model, connection type, and the screen you're using so support can look into it.
Need to check a specific case? Contact GenStream or email support@genstream.io with the game name, your device, and the message you're seeing.