When connecting the WiFi Hub to the router, the blue K light is flashing, which indicates the hub is in “hotspot” mode. This allows your smartphone or tablet to connect to the K-Rain WiFi Hub and enter the Network Name and Password. On iOS App Version V 1.2.2, the iPhone7 will not automatically drop the hotspot, and the authentication might time out:

When you tap “Configure Controller,” the network name that should appear in this scenario is the name of the homeowner network, not “KRAIN.” The phone has not dropped the hotspot.

Solution: Manually exit the ProEx Application, go to Settings, WiFi, and tap “Homeowner Network” or the WiFi Network Name of the router. Then exit settings, re-open the ProEX WiFi App and finish configuration.