There are several reasons why the blue light will not initiate after the user has performed a set up using the native iOS or Android Application.  


Potential issue #1: The user's WiFi router password or Network Name (also referred to as SSID) has the # (hashtag) symbol as part of it.


Solution: Change the WiFi router password/network name OR install a WiFi Extender. This will allow you to create a new network that authenticates to your existing router, but lets the user input a new name and password for this network, typically identified on a smart device as “network name”_EXT.  This avoids having to re-authenticate other devices currently connected to the router.


Potential issue #2: The Network Name contains more than 21 characters (including spaces).    If it is longer, the hub will not connect and the blue light will not initiate.


Solution: Shorten the Network Name (SSID) OR install a Wi-Fi Extender. This will allow you to create a new network that authenticates to your existing router, but lets you input a new Network Name or SSID for this network, typically identified on your smart device as “network name”_EXT.  This avoids having to re-authenticate other devices currently connected to the router.


Potential issue #3: Some newer routers (2016 and later) in the market are “dual frequency” or “dual band” routers (2.4GHz and 5GHz).  The K-Rain hub, as most IoT devices, is only compatible with the 2.4 GHz frequency.  


Instead of broadcasting two independent networks, they only broadcast one single WiFi Network Name, and the router will manage device connections through internal software. 


However, in some cases this internal router software does not always successfully direct the K-Rain WiFi Hub to the 2.4GHz network, and the K-Rain WiFi Hub will fail to authenticate – the solid blue light will not initiate.


Solution: Typically, a firmware update to the router will solve the issue.  If this does not, you can install a Wi-Fi Extender.  These range extenders work as a middle-man device, connecting the home WiFi router and broadcast a 2.4GHz only WiFi network. It creates its own WiFi network with _EXT as part of the new broadcast WiFi.  Another solution is to log into the router and manually split the frequencies,  making sure to name the networks to easily identify the frequencies on which they are broadcasting (i.e. K_Rain2-4 and K_Rain5).