Okay. Can you clarify that your Husbands iPhone/Sonos app is able to see the Sonos system and play to it? If so, goto your iOS device settings and ‘perhaps’ try the following:
- In the privacy settings ensure the Sonos App is authorised to have access to the Local network. (Toggle that off/on again)
- In the WiFi connection itself.. click on it to select its properties and switch off ‘Private Address’ and when prompted choose to rejoin the network.
Then try again in the App to connect to the ‘existing system’ (you may have to reset the App in ‘Settings/App Preferences’ to see that screen).
Also, just as another thought (for clarification). is it at all possible that you are using S1 App (black icon) and your Husband is using S2 App (gold icon), or vice versa?