The smart plug connects directly to the hub, so that should be fine provided the hub has internet access. For the camera to work, both the hub and the camera will need to be connected in to the new modem
To connect the hub to a new modem, when it has the hub offline message in the app, click on it and it will attempt to re-pair (it will give you instructions in the app). If that doesn't work, you will need to contact Smart Home Faults (via 13 22 00) so they can set the account back to 'ready to activate' (no data is lost) which will allow the hub to be factory reset and paired into the new modem
With the camera, it will also need to be factory reset (hold the button on the back for approx 12 seconds) and connected to the new modem via the WPS (like during the initial setup). It may not have to be removed/re-added in the app. After pairing it to the modem, reboot the hub (unplug and plug it back in) and then check if you can get a camera image after it has fired back up. If not, remove and re-add the camera in the app
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