Hi

Does anything here help?

https://support.sonos.com/en-us/article/connect-sonos-to-a-new-router-or-wi-fi-network

Alternatively, the easiest thing to do is to change the SSID and password on your new router to match those of your previous router.  This also avoids having to reconfigure all your other networked devices 

Brilliant idea but a bit too late for me as I’ve already reconfigured the rest of the house and this is all that’s left. I’ve seen the advice from Sonos and can go through that set up but it doesn’t actually end up connecting. 

Ah just done it again and it hooked on. 
 

thanks 

s