Using app proceeded to install my new purchase today.   I can see little  extension of WiFi coverage (+ 2m at most). 1st has not connected to modem appears to be working with a green light.  Frustrating time trying to add 2nd & 3rd units.  Both remain on blue pulse .   Little information if any available on what light status is appropriate & support line inadequate.  I recognise I may be missing something but should not be rocket science.  Will return purchase in morning if unresolved -  why should I have to work so hard to get an answer to such a simple installation question???