You can use the Shelly App feature "Wi-Fi batch change" to transfer your device to a new network. However, to do this you still need to have the old SSID available. Otherwise, you must factory reset each unit and add it again with the new SSID.
You can use the Shelly App feature "Wi-Fi batch change" to transfer your device to a new network. However, to do this you still need to have the old SSID available. Otherwise, you must factory reset each unit and add it again with the new SSID.