This indicate current device is not responding, please check the following:
1) If device is not added to ΣCentral, make sure your mobile phone's Bluetooth is enabled and is within...
You can extend the distance by adding your device to ΣCentral, with ΣCentral you can control/monitor your device anywhere around the world.
Please go to Setting->DeviceManager, tap on the ΣCentral you want to change Wifi configuration to open the drop down menu, and tap "Wifi" icon.
This indicate ΣCentral is not responding to server, please check if ΣCentral is properly powered and make sure ΣCentral Wifi connection is working properly. Try re-powering ΣCentra...
central, app, setup, pair, setting, add, failed