Switch off and on again internet connection in settings then reboot Aura
Thanks for your help. Unfortunately still the same issue after following those steps. Strangely I can see the Aura Media Server from my PC and play files.
The Aura app does not seem to be able to cope with changes in the IP address. I would suggest reserving an IP address for the Aura in your router then deleting the device in the app and signing out of the app. Then sign back into the app and setup the Aura again.