adding new sonos to app

So I already have play 5’s on one room 

beam sub and 2 ones for tv sound 

just brought a play 3 and 5 play 1’s from a friend 

Did a factory reset by holding the 2 buttons . So far so good the app finds them it takes me through the set up plays the hum and gives me a tick connected , but here’s the problem I can’t see them in the app on the system like my other Sonos products so I can’t assign them to a room I’ve tried turning them off and closed the app them turned everything back on and nothing no play 3 or the play ones ,only my original Sonos’s 

am I doing something wrong here ? 
 

thanks in advance