Toob provided a Linksys SPNMX router with my new Fibre fast Internet connection - 900mg.

Speed drops dramatically in house so I followed up Toobs suggested to install the Deco system.

Installed first Deco relatively easily next to Router and solid white light showed Internet connection which was confirmed on Router webpage.

Obviously, with hindsight, didn't complete the connection of remaining 2 Decos.  Now cannot get past that page in the App.  The App is looking for a blinking blue light which I don't have.  It just tells me that the connection has failed - which doesn't appear to be the case.

Any help greatly appreciated.