Check:
*After gateway installation, did you get notification, that installation was successful
*Was the gateway led blue after installation (continuously)
*Have you changed internet router password lately
*Is your internet router using channels 1-9 (=supported channels)
*Is your internet router using frequency 2.4GHz or 5Ghz (2.4GHz is supported)
Actions, in case internet router password on gateway was incorrect / you have changed internet router:
*Unplug the gateway, push the button and keep it pushed, plug the gateway, release the button after couple of seconds
*The led is turned off, gateway network configuration is cleared
*Install the gateway again =>Led turns blue
*Continue installing other components
Action, other cases
*Check home router configuration
In case you have changed internet router and reset the gateway settings according to instructions above, please return to section 2.A.