Trying to connect to google home

[KMG5]

Hi 

I am trying to set up my Chromecast.  Everything seems to be going fine (tv says it is connecting, can see wifi network etc), but then an error message pops up saying that something is wrong and it can't connect.  Error suggests turning off VPN (done), and checking that my modem is not in AP/isolation mode.  No idea what this means and how to disable it.  Would appreciate any help.  thanks

[cf4]

Are you using the google app on an IOS device? There is a fault with the latest version of the IOS app that could be causing this problem.