Hi there, 

We have TalkTalk internet, but live in a big house with walls and in some rooms it's hard to get a signal.

We bought a triple pack of Deco P9 wifi power line extender things and they were set up downstairs, but it's still hard to get a decent signal upstairs.

My mother in law has the app for these on her phone I think but she never uses it so I don't know if they need an update.

I was thinking about buying another 1 or 2 for upstairs, but wasn't sure if I needed deco p9's or if I could buy anything?

Also If I do buy 1 or 2 more, do they have to connect to the downstairs setup or could I have a separate setup for upstairs with another app for upstairs?