I have installed both the main and satellite switches per instructions after confirming line wire in junction box of main switch and the traveler wires in bother boxes. Main switch functions properly with lights receiving power. Satellite switch has led circle light on but does not function neither on/off or dimming. No flashing of WiFi LED symbol.

Have spent hours troubleshooting with no success. I bought two ks230 kits and attempted with the second set kit yielding similar but slightly different outcome--the main switch functions properly and the satellite switch does not function AND the circle LED remains off. No flashing of WiFi LED symbol.  

From previous posts this has seemed to be a hardware or firmware issue, which is perhaps supported by the fact I have different outcomes with 2 different kits. There does not appear to be a firmware update available. 
 

Help would be much appreciated