Dear user, we are sorry for your inconvenience. Please refresh the device list and enter the view again. If this function still cannot be turned on, please remove this device and add it again and try again. If this problem persists, there maybe some changes in the setting as for the latest version, and you can't get it back. You can give us a description what your need is, and provide your App version, your device ID and contact us again. We will reflect your issue. Thanks for your support.